To shit someone up is to scare the shit out of them.
To be shit up is the state of being scared shitless.
To be shit up is the state of being scared shitless.
"don't be shitting me up"
"lets go and shit em up"
"we shit em right up"
"they were shit up, so they shit out"
"lets go and shit em up"
"we shit em right up"
"they were shit up, so they shit out"
by Bitplane January 23, 2006

by Honey5683 April 8, 2016

by awesomestjh August 6, 2010

Guy: Oh shit here it comes!
'turd shoots out like a bottle rocket'
'guy's head gets stuck in ceiling'
Guy: Damn i hate doing those shit-ups.
'turd shoots out like a bottle rocket'
'guy's head gets stuck in ceiling'
Guy: Damn i hate doing those shit-ups.
by swamp thing November 16, 2005

by Cautiondelicate May 17, 2019

Sal - aw yeah, so I come 'ome and Billy 'n Ben have left the toilet seat all fackin shitted up. I mean seeeeeriously...
by Truth & co March 13, 2014

Working out vigorously with full bowels, then trying too hard to get that 'last' sit-up. At least your whole anus didn't pop out, like has happened to some unfortunate weight lifters.
Weight lifter: *pant* *pant* uuHHUNNGHHT! *sploosh*
Random hot girl walking by: Aww gross... did you just shit-up?
Random hot girl walking by: Aww gross... did you just shit-up?
by beep beep bitch! March 6, 2007
