A slang reference to the sport of basketball. Probably stems from the fact that professional basketball players are predominately of African origin and basketball is an exceedingly prominent element of young black culture in America.
The result of when a women gets on her knees to pull your pants down and as they are lowering the sudden release of pantaloon pressure springs up your penis into the womans eye. As she flys backwords from such a force, the male puts his hands on his waist, arches his back and laughs towards the heavens.
A particularly potent form of the dissociative drug ketamine, imported from the exotic plains of Africa, where it is used to tranquilise rhinos and elephants. Legend has it, African tribes used this sacred substance to help them communicate on the same level as common wildlife.
Side effects include involuntary animal noises, crippled walking ability and a compulsive need for more ketamine.
<Dave> Fucking hell, that was some strong ket.
<Steve> Yup, some of that African ket, fresh from the Saharan plains.
<Dave> Fuck man. How you finding it Pete?
<Pete> Meehhhh!! MURRRRR!!!! MURRRRRRRRRRR!!!!