What do you call a once that's an insect?
A creepy crawly.
Creepy Crawly Insect
Explanation
Explain Bear
Listen up, buttercup! This joke is so dumb it's almost genius, which you wouldn't know about. It's a pun, see? Like, "once" sounds like "ants," and ants are creepy crawlies because you probably cry and run to mommy when you see one. Get it? Probably not...