Some old guy walked up to us once and claimed that he was from the F.B.I (he even had a little hand written paper badge on his top) he said that there was raidars in the sky watching him where ever he went and told us to go away or we would be arrested, one of my friends then asked him what F.B.I stands for and he went quiet and just walked of shouting.
Another time some drunk English tourist gave me 5 euros for jumping over a bench!!