My friend and I smoked a bowl last night. Just one bowl. About 5-10 minutes after we smoked it we were both tripping our minds out. It was like the world was made of a bunch waves. When my other (sober) friend turned on a fluorescent light i commented that it was "fast light". I also heard an RA in the hall asking for IDs and drivers' licenses, but that never happened. My friend commented during the trip that it was like we were stuck between two dimensions with the higher one grating all over our bodies. Like there were little people pounding on our skin. My muscles were very twitchy but it was in a sinuous wave-like motion, not random spasms or convulsions. Overall the trip lasted about from 10pm to 1:30am or so. At least, we had control by then, although i still felt some disorientation and aftershock the following day until about 5pm. Furthermore, I took a drug test from rite-aid today (the day after) and was negative for cocaine, PCP, amphetamines, opiates and methamphetamines. I was positive for THC (no kidding right?) and inconclusive for ecstasy. Was this test accurate? ( http://www.target.com/First-Check-Home-Drug-Testing/dp/B000E6NGS8 ) what are some common things marijuana may be contaminated by? could it have been something in the pipe? my roommate smoked from the same pipe and stash right after us and was at a normal high. does anyone have any explanations? Also, our heartrates were very high the whole time. I was initially afraid i might have a heart attack or seizure.