horsin
To do something retarded, to not think, to be an overall oblivious person to any situation, and someone that usually has issues paying attention.
Robinson stop horsin or you will actually break your wrist.
horsin
a term for bangin hard, or riding em rough
I was horsin the shit out of your mom last night.
horsin' it up
acting wild in the manner a horse would
did you see jess last night? she was really horsin' it up!