The greatest shit of your life. Clenching you cheeks on the way to the toilet, praying you make it on time. When those sweet buns finally touch the seat an overwhelming feeling of pride and relief overcomes you and one cant help but squeel in satisfaction.
Mike: dude i heard some pretty wierd noises coming from the bathroom.
Chris: oh i was having a buttgasm
Mike: you know how i know you're gay?
Chris: oh i was having a buttgasm
Mike: you know how i know you're gay?
by mike the liar December 11, 2010
by otto von jizmark September 04, 2004
"The toilet at work was broken so I held my turd all day. When I got home and shit I had the biggest buttgasm of my life!"
by Thatguy915 February 09, 2012
After holding in rectal sepage for a long while, and finally being able to sit on the toilet and let it go. The rectal sepage comes out at an alarming rate and you seem to show symptoms of having an orgasm. Can be induced by continual diarrea.
by Jamie H. April 08, 2007
When you let off such a large, relieving fart that just makes you feel so much better that you achieve a state of euphoria known as the Buttgasm.
by Vofman March 06, 2009
Woody: We've got to do something about this!
Audience member: Oh oh oh oh oh oh!!!!! Toy Story Buttgasm!
Audience member: Oh oh oh oh oh oh!!!!! Toy Story Buttgasm!
by crashandburnofficial June 26, 2010