I've never smoked pot or eaten a pot brownie. And not for anything, but I've never even tried a cigarette. Despite all that, I love those Harold and Kumar movies, which are essentially all about pot. Can you really truly get pot humor if you've never tried weed? I watched a Very Harold & Kumar Christmas today and found it hilarious.
I also attended one of Jerry Garcia's last Grateful Dead shows circa 1995 at Soldier Field in Chicago without trying pot. Looking back that was probably a bad move. I couldn't get into the trippy, psychedelic images being shown on the screens framing the stage and kept waiting for a Dead song I actually knew, while everyone else seemed to know every song and exactly what the weird, trippy movies were all about. I did buy a cool tie-dyed shirt with those cute Grateful Dead Bears on it. That counts for something right?