On my 18th birthday a few of us went out and got completely and utterly lit. We went back to my friend's house to get stoned, he had a great attic bedroom at his parents with a hammock in it. I felt fine until someone passed me a joint, and as I reached over to grab it I leaned on this hammock. The slight swaying of it immediately plunged me into a nauseous room-spinning nightmare that was so bad I haven't been able to so much as look at a hammock since without feeling sick. I think I was sick everywhere and then passed out. Woke up with a face covered in marker pen dongs and a bunch of ashtrays emptied all over me. That was my punishment for vomiting. Great times!