Because they are really good at it
Irrelephant
Walk him and pitch to the rhino.
Climb a tree and act like a nut.
Elephant snot. Funniest part is seeing people's reaction when you tell it.
Want to hear a clean joke? Bob took a bath. With Bubbles. Want to hear a dirty joke? (Punchline hidden so you don't accidentally read)
As if she's going to lay there and be swayed by some new buck.