To chin-slap, meaning taking the palm of ones hand and slapping upward on someones chin.
"Oh man, you got chinst."
by somekids March 27, 2005
Chinst - To express an amazing time and or event to come
Example; 1.This weekend was sooo chinsty; 2.We need some type of chinst for this weekend!
by UhElectro May 30, 2011