Freeballin. When a guy goes without underwear in shorts that show his vpl (visible penis line) or his dick is visibly flopping around. It's especially common among jocks at the gym, or when playing basketball or volleyball.
by Jackson 5 August 31, 2006
one: dude i couldnt find any god damned boxers this mornin
two: are you kiddin me??
one: no man... im swingin free
two: are you kiddin me??
one: no man... im swingin free
by justin miller haha March 21, 2004