A female who wears clothes that show off her midriff while working with sauces, usually in a restaurant of some sort, thus risking sauce getting onto said midriff
Man I love the way that Saucy Midriff dresses, but i hope she doesn't getanything stuck in there.
The word comes from the game of foosball. It is when the opposition tries to clear the ball with it's goal tender or defensive line, only to have the front line of the offensive team smack it back into the net.