P-rock and Matt play "guess the magic word" when they have each other in head locks. Matt'll say "Guess the magic word, it starts with a C and it's orange and long and bunnies eat it" and P will say "Korange!"
And stuff like that. Once P guesses the magic word, he gets released from the head lock.
So Matt was in a head lock for a while this morning, when P said "Guess the magic word! It starts wif A-O-B!"
I'll give you a hint: it was a body part, and it was being used to reinforce the head lock.