Refers to a characteristic feature of the high/buzz associated with some strains of (high-grade) marijuana. Specifically: a slow, gradual, or simply delayed onset of the high itself.
A: "This weed sucks. It looks and tastes amazing, but I'm not even high."
B: "It's a creeper high, bra. Give it a minute."
B: "It's a creeper high, bra. Give it a minute."
by natenatenatenate June 11, 2009