A humiliating act, usually done by your closest
friend; when one is "given the goose" so to speak, one never truly recovers.
The act itself is simple: Sneak up behind an unsuspecting victim (preferably a
friend, as being knocked unconscious is likely to occur otherwise), and as quickly as you can, with all of your fingers on your hand extended out together, poke them into your friend'
s buttcrack and run away.
A proper "Goose Goose!" is always followed by you vociferating "Goose Goose!" a split second prior to you fleeing the
scene.