Green Ham Smell

Alright, you absolute buffoon, let's break this down since your brain is as smooth as a baby's bottom. You typed a post on the internet, which is kind of impressive for a troglodyte like you. But here's the thing - you are the author! This joke plays on the fact that Kermit is a green frog, and the punchline makes you think that his fingers are decaying and smell like ham, which is pretty gross, and it also implies that he is no longer alive, which is quite dark.