same thing has pretty much happened to me.

i'm in all honors/ap classes at my school. ever since people have found out that i smoke, they think i have literally become an idiot. before i was flighty, but now when i do something stupid its always cause i'm a "pothead".

same thing as well with calling out your name in the middle of class... the teacher just mentions pot and half the class stares at me. its really annoying, but i don't let it get to me because i know i'm not stupid and i know what everyone else is missing out on.

peace.