Grindr is an online dating application for gay, bi, trans, and queer people. “Coffee grindr” is a frequent joke.
   
“Coffee Grindr: a phone app used to invite strangers back to yours after a night out *for a cup of coffee*” was posted on Twitter by Enna on May 17, 2011. “Coffee Grindr, it’s an app for picking up guys in Starbucks” was posted on Twitter by Chad Thomas Watson on October 7, 2012. “Coffee Grindr: New app for guys who want to meet and hook-up with some coffee” was posted on Twitter by Nick on September 20, 2013. “Coffee Grindr - a new app for gay guys to hook up in Starbucks bathrooms” was posted on Twitter by jack o’brien on March 19, 2014.
     
“Dating site for gay baristas: Coffee Grindr” was posted on Twitter by steven smith on April 20, 2014. “Coffee Grindr. A new dating app for Baristas. Slogan: ‘It’s a Latte of fun’” was posted on Twitter by Darren Walsh Puns on January 29, 2016. “Coffee Grindr - dating app for gay baristas” was posted on Twitter by Tim Jones on December 8, 2016. “Coffee Grindr: a dating app for baristas” was posted on Twitter by abby on December 23, 2017. “coffee grindr a dating app for people who are coffee gender” was posted on Twitter by micycle b. on August 28, 2020.
     
“What do you call a gay barista?”/“A Coffee Grindr” was posted on Reddit—Jokes on April 21, 2021.
   
     
Wikipedia: Grindr
Grindr (/ˈɡraɪndər/) is a location-based social networking and online dating application for gay, bi, trans, and queer people. It was one of the first geosocial apps for gay men when it launched in March 2009 and has since become the largest and most popular gay mobile app in the world. It is available on iOS and Android devices in both free and premium versions (the latter called Grindr XTRA and Grindr Unlimited).
     
Twitter           
Enna
@ennacooper
Coffee Grindr: a phone app used to invite strangers back to yours after a night out *for a cup of coffee*
10:20 AM · May 17, 2011·Twitter Web Client
   
Twitter
Tim
@fspam
Can I invent an app for gay cruising at starbcuks called “coffee grindr”?
2:06 PM · Feb 28, 2012·Twitter Web Client
   
Twitter
Bec Shaw
@Brocklesnitch
Is there an app called Coffee Grindr where you find coffee lovers near you and you drink coffee?
9:11 PM · Sep 22, 2012·Tweetbot for iOS
   
Twitter
Chad Thomas Watson
@chadwatson
Coffee Grindr, it’s an app for picking up guys in Starbucks
7:07 PM · Oct 7, 2012·Twitter for iPhone
   
Twitter
Richard Wylde
@RichardWylde
Just discovered a new app called Coffee Grindr ®. Great way to find gay coffee.
12:31 AM · May 8, 2013·Twitter for iPhone
   
Twitter
Scott Dooley
@scottdools
I’m designing an app that allows baristas to have anonymous sex with each other, it’s called Coffee Grindr.
11:22 PM · Aug 16, 2013·Twitter for iPhone
   
Twitter
Nick
@hellonickwalker
Coffee Grindr: New app for guys who want to meet and hook-up with some coffee
1:17 AM · Sep 20, 2013·Twitter for iPhone
   
Twitter
jack o’brien
@obrienjohnjack
Coffee Grindr - a new app for gay guys to hook up in Starbucks bathrooms.
10:18 PM · Mar 19, 2014·Twitter for iPhone
   
Twitter
steven smith
@thepieman55
Dating site for gay baristas: Coffee Grindr
6:32 AM · Apr 20, 2014·Twitter for iPhone
 
Twitter
Morris Less
@Morris_Less
What do you call it when you meet for a gay hookup at a Starbucks? - Coffee Grindr http://tmblr.co/Zn2Lrn1dfMAGt
12:08 PM · Feb 17, 2015·Tumblr
   
Twitter
Lagarto
@BurmesePython
Coffee grinder: powderize coffee beans
Coffee Grindr: meet a dude at a coffee house first, to make sure you still want to fuck.
12:57 PM · Mar 21, 2015·Twitter for Android
   
Twitter
Darren Walsh Puns
@DarrenWalshPuns
Coffee Grindr.
A new dating app for Baristas.
Slogan: “It’s a Latte of fun”
11:34 AM · Jan 29, 2016·Hootsuite
   
Twitter
Tim Jones
@AnotherTimJones
Coffee Grindr - dating app for gay baristas.
6:08 PM · Dec 8, 2016·Twitter for iPhone
 
Twitter
abby
@abigailbgj
Coffee Grindr: a dating app for baristas
3:29 PM · Dec 23, 2017·Twitter for Android
 
Twitter
Jonnn
@AlterJonben
I was chatting with my barista friend asking about coarseness and brewtime he usually use in their coffee and asked for tips. I spelled coffee “grindr” instead of grinder. Hope he doesn’t get it. Hahaha
3:14 AM · Jan 1, 2020 from Cebu City, Central Visayas·Twitter for Android
   
Twitter
micycle b.
@m1cycle
Replying to @parafactual
coffee grindr
a dating app for people who are coffee gender
12:49 AM · Aug 28, 2020·Twitter Web App
 
Twitter
Kaedal, Meowster of Tufts
@Kaedalicious
Dating app for gay baristas.
Coffee Grindr.
8:59 PM · Apr 2, 2021·Twitter Web App
 
Twitter
KEANU
@KeanuTrias
I spelt “Coffee Grinder” as “Coffee Grindr” and I’m so sick of the gays
2:17 PM · Apr 3, 2021·Twitter Web App
 
Reddit—Jokes
Posted by u/KoalaMajor April 21, 2021
What do you call a gay barista?
A Coffee Grindr.