Shit

The 3rd most use word next to swag and Yolo which much like shit are fucking retarded (ignore my user name it's an inside joke)
Shit is not only used as a noun but also as and action, descriptive word and an expression

{verb} dude I got to shit
{action} I just took a shit #swag
{descriptive} dude you look like shit

{expression} oh! Shit!