When you cum on someone (face,mouth,etc.) and the partner wasn't expecting it and in a fit of rage collects the cum in their hand and then slaps the other partner in the face.

Unknown; something Dr. Peter Shumpmaker's ancestors no doubt built.

The act of taking a shower and a dump at the same time

to hump with the shins

in video games, short for the Shoot 'em up genre.

The smaller version of Shemp . A shorter useless piece of shit of a person. If Shemp had a mini me.