Today I just happened to smoke some very potent herb, felt like about 70% sativa / 30% indica. I hadn't smoked in 2 months and wow it made me trip pretty hard after sharing a bowl with a friend, and then we smoked another half a bowl. If I had smoked any more, I surely would have started to get a little insane, but I was told what effects the weed had before smoking so I knew what to expect.

To beat it all, it was some seedy brickweed! Luckily it was a strain that was still VERY super potent... had it not been grown/handled improperly it definitely could have been some really schizo stuff.

I like to stick to the indicas whenever I can, always mellow and cool. Some of those wacky sativas ya get without knowing beforehand can really throw a wrench into your gears if your set/setting and state of mind aren't ready for it.