Recently a load of American students have cum to northern Ireland to study as American schools don't do their words too good. If you want to confuse a Yank just ask them if they want to go out at night and do some fly tipping.
Try sneaking up on a fly in order to push it over, we're like ninjas!
Fly tipping is what Americans would call illegal dumping. Dumping yer trash by the side of the road. Its almost like we speak English isn't it?