What is Tyb?
1.
Short for "that's your boyfriend." Said to another person after sighting a particularly horrifying-looking male.
(Some meathead walks by wearing a "No Fat Chicks" t-shirt, black socks, shorts, and a backwards baseball cap.)
Bonnie: "Hey Katie - TYB!"
Katie: "Shut up! Is not!"
2.
Simply means, "Take Your Bitch." It can be used as a verb or as a noun. Taking ANY girl from her man is not easy, for some. Not everybody can successfully mange to tyb the ladies, many don't possess the looks nor the cockiness to tyb any girl. A tyb has to be pulled nonchalantly, i.e. you have to have game and can never seem desperate. It can also occur when a group of guys tyb the very same girl, very common.
tyb bru: Yo B, look at the bitch she is sexy!
tyb bro: Bet, ima tyb.
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3.
Totally your boyfriend- a way to point out someone hilarious and accuse a nearby friend of dating them.
OMG dude, TYB at 3o'clock ... That hottie in the Canadian tuxedo is TYB...
See