GBS - Greasy Butthole Syndrome. A temporary medical condition that occurs when no amount of wiping can thoroughly eliminate the fecal remnants, thus lining the ass cheeks with a greasy or oily film.

GBS is most often caused when ingesting oily or greasy foods, such as pasta or cheeseburgers.

Sufferers often find themselves escaping to the bathroom intermittently throughout the day to take auxiliary wipes in an effort to find relief. Many report that the portion of undergarment that has cinched up between their cheeks has been coated with an unfortunate and yellowish smear.

GBS is easily cured by taking a warm shower and scrubbing the ass cheeks with a loofah and a liquid soap that has been fortified with exfoliating beads.

Those afflicted with GBS can also suffer from GBS Guilt. GBS often causes a tickle in the anus that is only remedied by a hearty finger scratch. One is often drawn to sniff their own finger in an effort to check for consistancy and aroma. This action often leads to temporary feelings of loathing, disgust, and self hatred.
After dining on a Diaper Burger and Chili Cheese Fries at the Tommy's Burgers in Long Beach, Tyrone suffered from a bad case of GBS.
by Lewis Ebersole January 29, 2008
Top Definition
Gay Butt Sex
"So what did you all do over the weekend?"

"Nothing much, we went to John's house and had GBS."
by George January 29, 2004
The subforum of the Something Awful Forums where threads with subjects that aren't related to the themes of the other subforums are posted.
GBS is funny at times, but is mostly habitated by whiny losers that complain about how they were told to "Go back to GBS" in FYAD
by Dr. Yang December 09, 2003
When two men fist each other so hard they die momentarily and then come back to life with permanent disfiguration to their bowels. This is Gay Bowel Syndrome (GBS).
Josh: Dude, where's John and Robert?
David: I dunno, but I heard John got GBS.
*everyone creases*
by Dandercool August 02, 2011
gay butt sex or gay baht secks
That GBS with Dalton last night made my butt hurt!
by The Judge 94 October 26, 2009
An internet enclave on the Something Awful forums for the morbidly obese, and opinionated morbidly obese people. Also a place to post sob stories about your dead babies/parents/imaginary friends that nobody gives two fucks about.
Sartre: Hell is gbs
gbs: <emoticon abuse> <100 paragraphs of argument>
by GU-la-G November 17, 2006
People ask on Omegle and other chat websites.
It means gay/bi/straight?
Like "asl", but it is about sexual orientation.
by Oklahomarabbit February 28, 2014
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