The act of kicking someone
up the arse from behind whilst they are bent over (for example while
tending the grill) and catching the genital area with the tip of ones shoe/boot.
Bob had severely pissed off
Penelope the night before by surprising her with a
hot Karl, so in the morning when he bent over to pick up his underpants she decided to administer a grilling that would knock his
knackers into next week.
