Bro trolling is when you troll one of your bros.
Bro#1: Hey bro, I accidentally your sister yesterday.

Bro#2: ...What did you do?

Bro#1: Your sister. :)

Bro#2: Dude, what the fuck?

Bro#1: Relax man. Just bro trolling you.
by DeadJ0y November 25, 2011
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