Top definition
The act of putting ones hand into a fist and extending the little finger along with the thumb. The hand must shake rapidly as if struck with temporary Parkinson disease while the person sways back and forth to catchy upbeat music.
As the band kicked off everyone started Bro'n Out in excitement.
by Scott Tory February 20, 2013
Get the mug
Get a Bro'n Out mug for your boyfriend Bob.