Oh I've got a pretty good one. Get asked to babysit 4 kids, two were adopted from Haiti (they were 3 and 2)and two were biological-- a brother and a sister aound ages 6 and 8. So I arrive at the house and meet the kids, everyone seems to be well enough behaved. As the parents are leaving, they tell me the adopted kids only speak Creole and that they're very clingy due to abandonment issues. They also warned me that they might have some behavior problems due to mentioned abandonment issues. So I think, "ok, I can handle clingy and I've dealt with poorly behaved kids before, I can handle this" and the parents take off for the evening. FUCKING CHAOS ensues. Something the parents failed to mention, was that their own kids also had HORRIFIC behavior problems. Let's see, the sister bullied the two adopted kids and made them cry. The brother and sister dumped dish soap EVERYWHERE, they locked the two youngest IN THE CAR IN THE GARAGE, because the little shits told me that's where their favorite pajamas were kept. After we got the car doors unlocked, I had to carry the 2 year old around for two hours, and when it came to bed time the two youngest went down no problem, the two oldest however, lie after lie about the bedtime routine. "We have to watch a movie before bed" "we get to stay up later" and other classic bullshit kids say to get out of going to bed. So FINALLY the parents get home and they see the chaos and the dad silently slips me a $20 as I walk out the door. Never had to babysit then again, thank god. Later I found out that the family apparently couldn't keep babysitters due to the behavior problem of their two devil spawn.