Ereptile Dysfunction

Alright, listen up, buttercup. This joke is so dumb it's kinda funny. It's a play on words, see? "Ereptile" sounds like "erectile," and lizards are reptiles. So, the doc says the lizard has "ereptile dysfunction," which means he can't, uh, do lizard stuff properly. You probably can't either, you look like you still use your fingers to count.