Yeah, I didn't either. It was a 2-liter soda bottle gravity bong. The kid whos house we were at filled up the bottle and not knowing anything about weed or gravity bongs I shoved it down into my lungs. Wow. I coughed for like 10 minutes. 15 minutes later I did it again and I was literally stoned from 4:20 that day (it was 4/20 too) until about 9 at night. Thats the longest I've been stoned off of smoking haha