I was smoking from a gravity bong IN a police station. Just kidding. Actually, I think the most dangerous place was my porch. I try to make sure I have safe places to smoke.

EDIT: Oh, now I remember another place. To be honest, it wasn't with weed, but we were smoking salvia in my friend's car. My other friend was hittin' it while we were parked next to a neighbor's house down the street. Now, the windows were rolled down, and all of a sudden he started laughing like a lunatic. So, naturally the neighbors woke up (it was like 2am, and the laughing was INSANELY LOUD. other here who have tried salvia probably know what I'm talking about), and we booked it.