To practice the excercise of sitting up will having the feeling of wanting to poop, or doing sit-ups while deficating in the exact spot in which the sit-ups are being performed.
by Krusty Krab Rapist June 2, 2015
 Get the Shit-Upsmug.
Get the Shit-Upsmug. by Emoske January 25, 2011
 Get the Fucking shit upmug.
Get the Fucking shit upmug. When you poop more so than a normal amount on a given sitting or pooping so much throughout the day.
Me: I shouldn't eaten those two burritos last night. I'm just shitting up a storm-I already pooped an ungodly amount twice this morning. I feel bad for my toilet.
by mitch_southpaw March 19, 2018
 Get the Shitting up a stormmug.
Get the Shitting up a stormmug. What you say when you fist pound someone after they say something absolutely great
-derived from the term "gimme some knucks" (as in knuckles)
created by a freshman at Grafton High School '09
-derived from the term "gimme some knucks" (as in knuckles)
created by a freshman at Grafton High School '09
"Yo I got mad booty last night with this chick I've never met, it was great!"
"Knuck shit up to that brotha!"
"Knuck shit up to that brotha!"
by tfitz15 December 7, 2009
 Get the knuck shit upmug.
Get the knuck shit upmug. by tobe.stye January 4, 2017
 Get the fuckin shit upmug.
Get the fuckin shit upmug. by beetch November 30, 2004
 Get the tear that shit upmug.
Get the tear that shit upmug. by ttt November 21, 2004
 Get the fuck shit upmug.
Get the fuck shit upmug.