Dragon Ball Episode 91 "Counting Controversy!"

Chiaotzu fires his Dodon ray at Krillin, and it seems to destroy him. Suddenly, Krillin appears in the air behind Chiaotzu and fires a Kamehameha wave at him. Chiaotzu is only barely able to float above the ring now, so he tries another special attack. He jumps head-first towards Krillin in an attempt to push him out of the ring, but Krillin pushes him back. Chiaotzu then uses his special powers to paralyze Krillin. As Krillin is getting beaten up, he realizes Chiaotzu needs his hands to use his powers, so he gives him a math problem. Chiaotzu begins counting on his fingers, allowing Krillin to punch him out of the ring. Later that night, someone sneaks into Goku's room and tries to kill him. Goku wakes up, so the man flees. Goku and Krillin catch up to him and find that it was the Crane Hermit trying to avenge the death of Tao. They square off to fight, but Tien suddenly shows up and stops them. He says that Goku deserves to be punished and humiliated in the ring, not in the street at night.