This is a reference to the quiz show "IQ Supplement" (IQ Suppli for short). The host presents various brainteasers for the celebrity players. Once they see the answer, if they like it, they can push buttons to display the message suteki. But if they feel their legs have been pulled, they can each load up a moyatto ball to be dumped on the host at the end of the show. (Suteki is like "awesome"; moyatto is something along the lines of "this sucks".)