To smoke marajuana...

To rap orally against another individual, as in a contest; to orally recite rap or hip hop lyrics back and forth between 2 or more individuals.

short for battle buddy. a battle buddy is the reallest friend on the planet. They usually originate in some form of military unit, such as Rangers. They will be true friends for your entire life regardless of distance between battles, they will always be battles.

To have a group of men slap their penises together in an act of sexual arousal. The winner is often deemed as the person to ejaculate last. A battle is the general term. However, an entire hierarchy exists for different amounts of people that can establish an entire mathematical theory of combinatorial games.
Tai Chi is one man mastubating,swordfightis two men, Mexican standoff is three men, double date is four men,...,sausage house is ten men. This list can continue on forever

To have sex with someone

when that sheit goes down

two skilled rappers (professional or not) do verses until a person is clearly known as the winner. Ususally a crowd judging it.