To Engage in the act of a fist bump.
"Quilch me Bro!"
"I reverse quilched your sister yesterday!"
verb: the act of vaginal secretion
noun: vaginal secretions
"She quilched all over my bed!"
"Dude, you've got some quilch on your chin."
to step on someone's heel while following to closely.
Sean walks down the sidewalk and Elliot repeatedly steps on Sean's heels behind him.
Sean: Watch it! You're quilching all over the place!