What is Bro-nner?
When your bro-in out whith the bros and your having so much fun you become aroused.
Bro 1- "yo bro, can you grab me another nattie light, i got a bro-nner and i dont want anyone to see."
Bro 2- "no problem dude, happens everytime i play gamecube."
See bro, bro-age, bros