Oddly enough the most fucked up I've ever been was with just weed, and not too much of it (compared to how much I've smoked before).

A friend of mine was visiting from Ontario, and she wanted to try BC bud. I sent my little brother to get me about 20$ worth. That night when we smoked it she was freaked out that it might be laced. I told her no, it wouldn't be laced.

Half an hour later while lying on my back outside watching Super Mario fly around in the sky I realized I was probably wrong.