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.
by Dr. Rubin December 22, 2010
Get the horsin mug.
a term for bangin hard, or riding em rough
by Lucas November 15, 2003
Get the horsin mug.
acting wild in the manner a horse would
did you see jess last night? she was really horsin' it up!
by netherbl4ze May 16, 2023
Get the horsin' it up mug.