The act of having sex on a wet floor in Japan. Which is thought of as kinky.
Guy from Japan : "Hey, do you want to Slippery Floop with me tonight?"
Girl friom Japan: "Seriously? Thats so sexy...I'd love to!"

Guy from the U.S.A : "I want to go to Japan to Slippery Floop with some pretty Asian girls."
Another Guy from the U.S.A: "Me too!!"
by That One Girl From Canada February 16, 2009
Get the Slippery Floop mug.