Brollision - (n) (Bro - lish - shun) - an unfortunate event where you walk in to, bump, or graze someone from the Bro community. This event happens particularly frequently if there is a high density of Bro's around.
I accidentally went to the bar during the NCAA Basketball tourney....had like 10 Brollisions in 2 minutes.
by Marcus_msoe April 12, 2011