George isn't taking it upon himself to rush to get John "unfrogged" this time it would seem...
He's keeping him all amphibian-style for a bit to play some games and torment him... George can be a prick some of the time.
George's martial arts training, and in fact his sensei Mr. Miyagi, goes back almost a full year to this comic, "Sweep the leg"
. That was the start of George as a mixed-martial artist storyline. That's where he ended up getting the money to pay for the World Tour
He was originally supposed to wear the Karate Kid headband with his ninja gear in "Sweep the leg"
, but for some reason I decided against it at the last moment. He's wearing it now though to attempt catching flies with chopsticks... since as Mr. Miyagi says, "Man who catch fly with chopstick accomplish anything."