Someone who goes through interrogation is often said to have been “grilled.” There are many “grilled” cheese jokes.
     
“Grilled Cheese: Cheese under interrogation by the CIA” was posted on the newsgroup alt.humor  on October 2, 2004. “Hey Mo, what do you call cheese that answers too many questions?.................................. Grilled cheese. Hahaha!” was posted on Twitter by Eddie on July 28, 2010.
   
“A grilled cheese sandwich is just a cheese sandwich that’s been intensely interrogated” was posted on Twitter by Ian Kinney on August 16, 2016. “Grilled cheese sandwiches are just cheese sandwiches that have been interrogated” was posted on Twitter by andrew on April 10, 2018. “Grilled cheese sandwiches are just cheese sandwiches that have been interrogated” was posted on Twitter by Colonel AD, SM on April 11, 2019. “What kind of cheese has been interrogated? Grilled cheese” was posted on Reddit—Dadjokes on March 28, 2023.
   
“what do you call interrogated gouda? GRILLED CHEESE” was posted on Twitter by K.Flay on July 23, 2011. “Joke time: what do you call interrogated gouda? Grilled cheese” was posted on Twitter by Vivi⁷ Dependa on February 19, 2020.
 
Sergal is the name of a Greek dairy products company based in Serres, Macedonia, Greece. “if you interrogate a sergal do they become grilled cheese” was posted on Twitter by Galuade @ FIRES OF RUBICON on February 21, 2017. “WHAT DO YOU CALL A SERGAL BEING INTERROGATED? GRILLED CHEESE!” was posted on Twitter by θ∆ Gobby-wobs on July 28, 2017. “What do you get when you interrogate your sergal friend? Grilled cheese” was posted on Twitter by Clementine the bunbun on May 3, 2022.
   
“What do you call a curd that’s been asked a lot of questions? A grilled cheese 😏😏” was posted on Twitter by Nadine on May 20, 2022. “What do you call a cheese curd who has been asked too many questions?  Grilled Cheese!” was posted on Twitter by Todd Folstad on December 5, 2022.
 
   
Wikipedia: Grilled cheese
A grilled cheese (sometimes known as a toasted sandwich or cheese toastie) is a hot sandwich typically prepared by heating one or more slices of cheese between slices of bread, with a cooking fat such as butter or mayonnaise on a frying pan, griddle, or sandwich toaster, until the bread browns and the cheese melts.
   
Wikipedia: Sergal (dairy)
Sergal (Greek: Σερραϊκή Βιομηχανία Γάλακτος), Serres Milk Industry, is the name of a Greek dairy products company based in Serres, Macedonia, Greece.
 
It was founded in 1964 by Agrotiki Bank and was sold to private sector in 1995.
     
Google Groups: alt.humor 
Sexually Immoral Mushrooms  
Tim Bruening
Oct 2, 2004, 1:44:00 AM
Grilled Cheese: Cheese under interrogation by the CIA.
 
Twitter
Eddie
@EddieSportas
@mogotti2 Hey Mo, what do you call cheese that answers too many questions?.................................. Grilled cheese. Hahaha!
9:23 AM · Jul 28, 2010
 
Twitter
Ian Spring
@ianspring
I wasn’t sure which sandwich had been interrogated by the cops, but I had a hunch it was the grilled cheese.  #makingupjokesbecauseIcan #fb
7:25 PM · May 16, 2011
   
Twitter
K.Flay
@kflay
what do you call interrogated gouda? GRILLED CHEESE
5:29 PM · Jul 23, 2011
   
Twitter
q^s!no7
@louisvb
New blog post >> Interrogated Cheese << The art of the grilled cheese

http://ow.ly/cgFZU
11:05 AM · Jul 16, 2012
   
Twitter
Natalie Shure
@nataliesurely
If by grilled cheese you mean interrogated cheese! (i waterboarded my sandwich)
1:20 PM · Apr 11, 2013
   
Twitter
babaluuuuuuu
@TheHeavies2002
I took a big hunk of cheddar and interrogated the shit out of it.  Best grilled cheese ever.
1:54 PM · Jun 11, 2014
   
Twitter
Northside Mike
@Northside_Mike
A grilled cheese sandwich is like a regular cheese sandwich, except the cheese has been interrogated by police.
*deactivates account*
10:01 AM · Jun 30, 2014
   
Twitter
Michaela Neville
@Mic_Nev
Even when the word “grill” is used to mean “to interrogate,” it just makes me hungry for a grilled-cheese sandwich. #grilledcheese #nom
4:44 AM · Dec 27, 2014
   
Twitter
Andrea - cohost.org/Andicraft
@AndiJorgensen
Replying to @Smingleigh
@Smingleigh I had a grilled cheese. Turns out that doesn’t mean “interrogated for information cheese”.
6:14 PM · Mar 22, 2015
   
Twitter
!booper dooper!
@mrcorpsedoctor
Replying to @MorganFOnTheRun
@MorganFOnTheRun if it was interrogated by a cop it would be a grilled cheese
3:14 PM · Mar 29, 2015
   
Twitter
baal is life 👑
@bossysaucy
yo what do u call gorgonzola thats being interrogated ? grilled cheese hah #NationalGrilledCheeseDay
1:05 PM · Apr 12, 2016
   
Twitter
Ian Kinney
@IanKinney
A grilled cheese sandwich is just a cheese sandwich that’s been intensely interrogated.
12:33 PM · Aug 16, 2016
   
Twitter
Galuade @ FIRES OF RUBICON
@galuade_
if you interrogate a sergal do they become grilled cheese
12:46 AM · Feb 21, 2017
   
Twitter
θ∆ Gobby-wobs
@Gobbywobs
WHAT DO YOU CALL A SERGAL BEING INTERROGATED?
....
GRILLED CHEESE!
OOOOOOOOOOOOOOOOOOOOOOOH
4:31 PM · Jul 28, 2017
   
Twitter
Miserable Asshole
@MiserableAssho1
What do you call cheddar after it’s been interrogated by the police?
Grilled Cheese.
#dadjokes
6:20 AM · Aug 2, 2017
   
Twitter
Stephanie Mieczkowski
@IGotsSmarts
A grilled cheese sandwich is just a cheese sandwich that was interrogated.
8:19 PM · Nov 16, 2017
   
Twitter
andrew
@AndrewsNotFunny
Grilled cheese sandwiches are just cheese sandwiches that have been interrogated
11:26 AM · Apr 10, 2018
   
Twitter
Colonel AD, SM🇮🇳
@simply_mixed_up
Grilled cheese sandwiches are just cheese sandwiches that have been interrogated
12:46 AM · Apr 11, 2019
   
Twitter
The Real American Dadass
@R_A_Dadass
What do you call cheese that’s been interrogated by the FBI?
Grilled cheese.
2:09 PM · Oct 10, 2019
   
Twitter
@seadragom@meow.social
@seadragom
If you interrogate a sergal is that grilled cheese?
11:49 AM · Dec 31, 2019
   
Twitter
Vivi⁷ Dependa
@btsmiraclearmy
Joke time: what do you call interrogated gouda? Grilled cheese.
11:58 PM · Feb 19, 2020
   
Twitter
Colonel AD, SM🇮🇳
@simply_mixed_up
Grilled cheese sandwiches are just cheese sandwiches that have been interrogated
2:54 PM · Apr 10, 2020
 
Reddit—Oneliners
Posted by u/Beardgardens November 15, 2020
I don’t always interrogate my sandwiches but I have grilled cheese
     
Twitter
Uncle G
@DJTreG
What do you call a sandwich being interrogated?
Grilled cheese
1:03 PM · Mar 28, 2021
   
Twitter
Baphnedia
@baphnedia
Replying to @phenod
@OnyxRomance asks:  If you interrogate a sergal, are they grilled cheese?
2:14 AM · Nov 10, 2021
   
Twitter
Colonel AD, SM🇮🇳
@simply_mixed_up
Grilled cheese sandwiches are just cheese sandwiches that have been interrogated
2:57 PM · Apr 10, 2022
   
Twitter
Clementine the bunbun
@evsthename
What do you get when you interrogate your sergal friend?
Grilled cheese
8:29 AM · May 3, 2022
     
Twitter
Nadine 🎮 FF7: CC, GI, P5R, WoW 🎮
@19L4dyh4wk73
What do you call a curd that’s been asked a lot of questions?
A grilled cheese 😏😏
1:47 PM · May 20, 2022
   
Twitter
Todd Folstad
@TofutiOpera
Replying to @jessicakevibes
What do you call a cheese curd who has been asked too many questions?  Grilled Cheese!
4:46 PM · Dec 5, 2022
 
Twitter
Gas Station Damsel
@crystallinevee
What do you call a sandwich that’s been interrogated? A grilled cheese
2:43 PM · Dec 18, 2022
 
Reddit—Dadjokes
Posted by u/MadAdam88 May 28, 2023
What kind of cheese has been interrogated?
Grilled cheese.