One of my worst experiences was kind of.... gross. A couple of guys on the football team have a "spit cup", and one day, they poured all of their spit in a bigger cup. Then, they got someone to deliver it to me, saying that it was water, knowing that I love to drink water. I drank it and my eyes twitched, then the guys on the football team walked up and said "Heh... do you like the water? IT'S TOTALLY NOT MADE WITH OUR SPIT *major laugh*". After that, I stood frozen, then tried to spit it out, realizing that I drank it all. I punched the guys, then they punched me back, hard. High-school sucks :C