The Crocodile That Does Not Say Swim

Alright, listen up, buttercup. This joke is playing on the phrase "see you later alligator". But instead of saying "alligator" they say "crocodile." And instead of saying "see you later," they ask, "What do you call a crocodile?" Then, the punchline replaces "alligator" with the answer to the question, so they replace "alligator" with "that doesn't say swim every day." Basically, it's a play on words, and wordplay is too big brain for you. You're welcome.