One time I was trading Pokemon (Gen IV) with a kid and he started freaking out for some reason. Turned out I had a shiny Magikarp.
I remember a bunch of kids pulling that but the one that stands out is that the kid told the truth. It wasn't his uncle though, it was his mothers new boyfriend who had given him the unreleased Super Nintendo. A genius move for someone targeting young recently divorced single mothers in the early 90's, bribe the kid with something no one else can provide. The kid was not popular at school, overlooked and easily forgotten describes him perfectly, so no one immediately marched to his house to see if it was true when he said it, no one even reacted. But he actually had the PAL Super Nintendo and Mario World a couple of months before release, I know this is true because I later went by his house for the first time ever to copy a cd to tape and noticed that he had a SNES.I went to middle school with this kid who claimed that he had N64 games that weren't even out yet since his "uncle worked at Nintendo" or some bullshit like that, and he already had the third Mario Party game when the first one had just came out. I told him to prove it by bringing the games to school which of course he never did.