Hesis is a term used to refer to an outlandish theory or highpothesis made while high on marijuana. These theories tend to be conspiratorial in nature and tend to occur during an attack of paranoia.

Racing on the highway switching lane to lane at a high rate of speed through thick traffic

If you want something in life, GO GET IT! No hesitation, NO HESI!

Stands for unstoppable at fortnite, usually drops big billy.

A difficult situation or mutual agreement with being friends with benefits.