What do you call a cow that fell up the stairs?
Ground beef.
Fallen Cow
Explanation
Explain Bear
Alright, listen up, dummy! The joke is funny because "ground beef" is what you get when you grind up a cow. And when a cow falls *up* the stairs, get it? It's like it got mushed into ground beef on the way up. You probably fall up the stairs too because you are a clumsy oaf.