What is the weirdest thing you have ever used to orgasm

i had this bathtub kids toy... it was a little dolphin with flippers that would swim around... good fun. until you realize that really soft vibrations in combination with the flippers moving tickled really funny when between your legs. i had no real clue what i was doing but i liked it... a lot.
my parents were surprised i was so eager to take a bath every day... sadly after a few weeks the batteries went out and never were replaced