-People who think they can smoke your shit without you.
-People who only want to chill when they know your holding.
-People who don't put down on the blunt.
-People who always talk about how much "better" there stuff is.
-People who learn a few names and think their Dr. Greenthumb.
-People who say there not high when it is completly obvious that they are.

I can go on for ever, I got a few years of jerk-off's under my belt. . .