A guy with a disproportionally large ass. More commonly known as runners butt.
That dudes ass looks way out of proportion compared to the rest of his body. Thats what I call a J-Bro. Dayumn!
by Redlantrn July 8, 2009
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Super awesome computer nerd who loves riding his bike on Thursdays and has freakishly long legs.
See that J Bro over there on his bike! Man, he sure has some long fucking legs!
by Cali Halcy March 22, 2009
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A word used when one is departing a place or situation. The phrase is an acronym for Jet, Jam, Bounce, and Roll Out.
Man, this party sucks... lets J-J-BRO!
by Erin Baker March 28, 2007
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