A slang term in reference to your homeboy; in some instances, it can be used in anger to refer to your homeboy in a negative way.
Used in normal conversation:
"Yo, what's up brosama?"
Used to refer to your homeboy in a negative way:
"Wtf dude, you blew up my GI Joe with a firecracker! What's up with that brosama?!"
a bro that is acting especially volatile and uppity for lack of attention
chill brosama. no one cares, quit fuckin talkin