guy: Who's that Joe's talking to?
girl: Of that's his bacon bro.
A bro that bro'ed before all other bros. The prototype for all future bros. Does not know how to get anywhere other than the gym and tanning salon. One cannot bro harder than the protobro. Typically they dwell in Omaha, Nebraska and can be easily distracted by other bros.
William Anderson must be the proto-bro... he broes so hard motha fuckers try to fine him.
Toh bro is used when you are in deep trouble and you have your bros with you.
It can also be used as telling someone you are tired.
A bro who thinks he's a good bro, but bails on his friends for foolish, frivolous, selfish reasons.
Guy 1: Man, Bricker is such a sketchy bro.
Guy 2: Tell me about it. We made plans and he totally bailed on us for selfish, frivolous reasons.
Any gesture that is friendly in general.
Daniel: That’s not a very bro-like thing of you to do.
Izzy: Bro...
you know, when you're just bros.
Jonny wanted to sodomize Andrew, but they were just bros.