“Shut the front door!” is an expression that has been printed on many gift items. The term is usually regarded as a euphemism for “shut the fuck up” (popularly written as “STFU”). “Shut the front door!” also means astonishment, such as “you don’t say!” or “get out!”
 
“Another variation I’ve heard recently (on the radio, yet!) is ‘Shut the front door!’ When shouted, halfway through it sounds so much as if you’re about to say ‘Shut the fuck up!’” was cited in print on November 30, 2002. The term was entered into the Urban Dictionary on December 6, 2002. A 2011 Oreo Fudge Cremes commercial further popularized “Shut the front door!” An Urban Dictionary entry on April 27, 2006, claimed that The Buckethead Show had coined the term, but this show did not exist in 2002.
     
 
Wordcraft Forum
C J Strolin
posted November 30, 2002 07:41 Hide Post
Another variation I’ve heard recently (on the radio, yet!) is “Shut the front door!” When shouted, halfway through it sounds so much as if you’re about to say “Shut the fuck up!” that timid people within earshot become noticably more skittish. But, when you think of it, what better slang term for “mouth” than “front door”?
 
Urban Dictionary
Shut the front Door
A expression used when mad or angry. A replacement For Shut the Fuck up
by anonymous Dec 6, 2002
   
TribalWar Forums
mixmandan
06-07-2003, 08:48 PM
what does stfd stand for again?
shut the front door
 
RiSe226
06-07-2003, 08:49 PM
shut the front door
 
slog
06-07-2003, 08:50 PM
sit the **** down
     
The DQ Times Forum
Posted: Fri Mar 03, 2006 8:02 am   Post subject: Modern Men blurb- what Josh Braaten said about Jane
(...)
He adds for Seymour, who actually is a native of the United Kingdom, “there are lots of opportunities for her to use plenty of British slang. In one show, Kyle (Max Greenfield) the womanizer, was thinking of euphemisms for sex like ‘Shut the front door,’ ‘Sink the putt” … and Jane’s character says, ‘Well, I prefer ‘Bury the bangers in mash”
 
Urban Dictionary
Shut the front door
More publicly acceptable and FCC-friendly version of S.T.F.U., originally coined by Buckethead on WJRR Radio.
“You slept with your girlfriend’s sister and her mom? Shut the front door!”
by GrendelPrime Apr 27, 2006
 
Google Groups: rec.sport.pro-wrestling
SHUT THE FRONT DOOR! 
Smart Ape - Excelsior, bitches!  
11/16/06
I missed that.
—
—- “Damn dirty fleas…”
—- 8th Funniest Poster of 2004, 6th in 2005 and 5th in 2006.
—- 5th Most Improved Poster of 2004, 6th in 2005 and 3rd in 2006.
—- Winner of 2006’s Worst Feud/Flamewar/Thread
     
Idolforums.com
Materialgirl
Jun 9th 2007, 8:19 PM  
Thataboy.
I actually find Lacey more annoying though. “Shut the front door” A b*tch like that gets on my last f*cking nerves and sh*t.
 
Inthe00s Message Board
Subject: Re: Creative “cursing”
Written By: nally on 10/20/09 at 1:30 pm
(...)
Another common creative euphemism is “Shut the front door!”, which Stacy London often uses on What Not To Wear when the guest comes out wearing a new outfit that might stun the viewer.
 
YouTube
Oreo Fudge Cremes Commercial - Indescribably Good! (15 sec) 
Oreo
Uploaded on Apr 6, 2011
There’s Oreo creme under that fudge! Shut the front door, For reals?
Oreo Fudge Cremes are a thin, fudge covered cookie with an Oreo creme twist.
Try them in Original, Mint and now Peanut Butter Creme and Golden!
 
YouTube
Shut the front door!
Phillip Horrocks
Uploaded on Jun 29, 2011
Cheno on so you think you can dance!
 
Los Angeles (CA) Times
Lucy Punch, turning her back on fame?
British actress Lucy Punch’s comic turn in ‘Bad Teacher’ suddenly has made her a hot commodity in Hollywood, but she insists that supporting roles are closest to her heart.
July 04, 2011|By Leah Rozen, Special to the Los Angeles Times
(...)
“I twanged it up a bit because this character is supposed to be so unlikable, and that made it more irritating,” says Punch, 33, whose lines in the film are peppered with upbeat euphemisms. In a typical bit, her character exclaims “Shut the front door!,” where others might end the phrase with a more colorful phrase suitable for an R-rated movie.
 
MyNorthwest.com
Linda Thomas
Moms are offended by “shut the front door”
July 13, 2011 @ 4:51 pm (Updated: 6:03 pm - 7/13/11)
A family sits around a table eating Oreo cookies. The mom takes a bite of a fudge creme cookie that’s so good the only way she can describe it is by exclaiming, “Shut the front door!”
 
Even though a mother is the one blurting out that expression, a moms group finds it shocking.
(...)
The expression “shut the front door” is used on several television shows:
(Video follows—ed.)