you already know...phrase found in most juelz santana gospels...catchy and pimp, said to holla at hoes, sluts, bitches, etc...also said to recognize yer niggaz are in the premises...check AYYY...you already know
A stock response to anything glaringly obvious and/or ridiculously paranoid that somebody high might say. Sounds genuine to a stoner but has a mocking undertone from which sober people can draw amusement. Derived from an episode of Sealab 2021, a stoner favorite.
Sparks: "Marduk, you totally rule"
Marduk: "I totally already know that"
Stoner: "McDonalds is totally responsible for like, two point eight billion deaths from starvation in Canada alone"
Sober guy: "I totally already know that."