lightweight

when a person has low tolerance on any drugs, including marijuana.

pothead 1: This guy is high off of schwag.

pothead 2: Yeah, I'm not even high, he's a lightweight.

lightweight: I'm so high right now!

pothead 1: dude, this sucks lets get some dank dude.

pothead 2: yeah.

by PwNz0rZ July 05, 2005