The perfect retaliation after being mooned. The victim executes a (flying) kick at the mooner.
A direct hit indicates the perfect revenge.
If the victim misses his kick, the mooning counts as twice the humiliation.
Alexander: You got mooned yesterdag, didn't you?
Robin: Don't worry, afterwards I performed a flying mooning-kick.
Moe: But I dodged you!
Daniel: Whaha, double mooned!
robin: Oh, dear.