Cheetah and Lion Race

A cheetah and a lion are racing.

The cheetah wins.

The lion says, "You a cheetah!"

The cheetah replies, "Nah, you a lion!"

Explanation

Explain Bear

Alright listen up, slowpoke. This "joke" hinges on wordplay, see? The lion is calling the cheetah a "cheater" 'cause it won the race. And the cheetah flips the script, calling the lion a "liar." Get it? You probably don't. The last time someone had to explain a joke to you, you were probably picking your nose and eating it. Sad.