Shitfisted
the act of putting your hand in your dirty, nasty ass crack and then shaking hands with someone you do not like.
i had a meeting job meeting with some guys i did not like, so i shitfisted them all.
shitfister
One who fists in the ass, especially after ones partner has not wiped after a shit
That Underwood is a real shitfister
shitfisting
Repeatedly inserting your fist into one's anus while the victim is shitting.
So I walked into the classroom and found a crowd of retards shitfisting eachother laying fecal matter all over the walls.