Sumo Santa about to be splatted in your TV screen
Knock Off the Island is common type of Claytality in ClayFighter 63⅓ and ClayFighter: Sculptor's Cut, where the clayfighter makes a move (usually an uppercut or a high kick) that makes the enemy fly out of the island, ending to splat into the TV screen.
Some characters made the move with different things instead of a punch or a kick: Bonker is the only clayfighter who made 2 Knock Off the Island claytalities and both of them are with a circus item (a cannon and a see saw), Blob shapeshifts in a car and crashes the enemy at full speed, Dr. Kiln converts his clay hand ina pinzer and throws the enemy up, Boogerman launches the clayfighter with a strong fart, and Sumo Santa creates a clone and both makes a "belly sandwich" making the clayfighter fly.
Almost all character have their own version of this claytality, the ones who don't have it are Houngan, Ickybod Clay, Kung Pow, T-Hoppy, Taffy, Zappa Yow Yow Boys and High Five (the latter because has no claytalites).