Yeah the only times I've seen someone have a bad time with weed were just regular paranoia attacks ("Dude we have to get out of here, my mom is coming, we have to tear ass you guys") and the odd PCP dose.

I've been that high too, where things get very wavy and your vision kind of zooms in sometimes. And also when things go like a flipbook and everything is misty and you feel like you're floating... and some people don't like that?!?