Hey, you know those birds and lizards that feast on decaying flesh?
Oh, sorry, I shouldn't carrion about it.
Carrion About
Explanation
Explain Bear
Listen up, buttercup. The joke is that "carrion" sounds like "carry on." Carrion is dead animal flesh, which those birds and lizards eat. It's a pun! You probably think a pun is a type of bread, huh?