A flying saucer is a sexual act involving a man, a
woman, a bench, and a tire swing.
The
woman sits in the tire swing, with bare ass exposed through the bottom. The man lies underneath the swing on a bench whose height is carefully selected to permit intercourse without chafing. After successful penetration, the man spins the tire with his hands and the
woman may elect to simulate spaceship sounds.
Dude, your
sister took me to the schoolyard last night and gave me a
flying saucer. I have a bit of
chapped cock, but on the whole, it was intergalactic!