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?!"
by 'thew July 8, 2009
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a bro that is acting especially volatile and uppity for lack of attention
chill brosama. no one cares, quit fuckin talkin
by nicklesack May 27, 2008
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A best friend that you never see. He's always hiding or just at home.
Named after the infamous best friend you never see,

Osama Bin Laden
Mike:Hey where's Joey at?
Daniel: IDK man he's being a real Brosama Bin Laden
by BertiCoosBay December 11, 2010
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Someone who you think is your bro, but is actually vicious foe. He'll send your hopes flying, and then send you crashing.
I thought Matt was my best good friend. The modaf**a turned out to be a Brosama Bin Laden.
by duq_pub February 19, 2017
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A bro who wasn't a nice bro. Barack Brobama gave the order for his assassination.
Did you hear? Brosama Bin Laden is dead! - Bro #1

A holy shit, this is almost as exciting as the death of Brosef Stalin! - Bro #2
by aaronthejoo May 15, 2011
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DIS WHEN U GETTIN YOUR DICK SUCKED DEN YO HOMMIE ROLLS UP AND BRAKES IN AND ASKS U IF U WANNA GET YO DICK SUCKED HWILE GETTING YO DICK SUCKED AND THEN HE GOES DOWN ON YALL WITH YO GIRL N MAKES U KILL YOURSELF
YO DID U HEAR LIL TYRSSE BROSAMA BIN LADIN'D TYRONE LAST NIGTH WHILE LAQUISHA WAS SUCKIN HIS DICK?
by wat u wnt nigga October 17, 2010
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