Most weed around here doesn't come from organized crime, but in the cities, you can almost only get it from criminals, or people who got it from criminals. We either grow the shit or traffic it from medical marijuana states. Now you know! And remember kids, say No! to prohibition!
I ate 2-2.5 and I still had a LOT of fun. I didn't see shit but everything was amazing and it totally changed my frame of mind. I have kind of an explosive personality when it comes to intoxication though so who knows.
Keep in mind that the quality of shrooms can vary greatly. I have no doubt you had a good time but as a general rule I think an eighth should be the minimum.
Funny story: So I was in the car with my Mom and my brother (CoExIsTeNcE). She stopped at 7/11 to get some milk and me and my brother stayed in the car. About 3 minutes later she came running out with a gallon of milk and said, "Damn, the guy behind me is robbing the store."