One of the schools I went to had "Special Ed" that encompassed the "gifted" students as well as the mentally challenged ones. The "giftees" were put in a program called APPLE (I can't remember what the acronym was for). I don't remember what the other program was called. The teacher for APPLE was the sister of the teacher for the other students and somehow we used to go on field trips together.
On one field trip to the zoo, one of the APPLE kids (who was annoying pretty much everyone on the bus ride up there) decided to be a brat and start antagonizing the lion. He was yelling at it, throwing stuff, and generally being a jerk. The lion finally got fed up, walked up to the bars, lifted his leg and just hosed the kid.
One of the mentally challenged kids shouted at him that he was "a retard" and everyone laughed at the punk. His parents had to come pick him up because he couldn't get on the bus covered in lion pee.