shitup

a common prank resulting in the victim attempting a blind-folded situp and encountering the perpetrator’s -ss at the apex of the situp.
bart wanted to impress his friends with his ability to achieve at least one situp while resisting the force of a towel pinning his head to the ground by a buddy. before he knew it, his nose was cheek deep in -ss and he realized he had actually performed a sh-tup.
to sh-t someone up is to scare the sh-t out of them.
to be sh-t up is the state of being scared sh-tless.
“don’t be sh-tting me up”
“lets go and sh-t em up”
“we sh-t em right up”
“they were sh-t up, so they sh-t out”
british prison officer’s slang for an inmate seeking attention by smearing his cell with excrement.
wow did you see that sh-t-up in block 9 this morning? i pity the cleaners.
to do 25 sit ups after you take a sh-t
i just got done taking a sh-t, i better do my sh-t ups.
working out vigorously with full bowels, then trying too hard to get that ‘last’ sit-up. at least your whole -n-s 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 sh-t-up?
when a huge dump comes flying out your dunghole so fast that you are lifted off of the toilet seat
guy: oh sh-t here it comes!

‘t-rd shoots out like a bottle rocket’
‘guy’s head gets stuck in ceiling’

guy: d-mn i hate doing those sh-t-ups.
to practice the excercise of sitting up will having the feeling of wanting to p–p, or doing sit-ups while deficating in the exact spot in which the sit-ups are being performed.
“randy and i went to the gym and boy did i have a major case of the sh-t-ups!”