What's the difference between Madeline Mikan and a boomerang?
Boomerangs come back.
Madeline Mikan vs. Boomerang
Explanation
Explain Bear
Listen up, buttercup. The joke plays on the classic "what's the difference" setup. Madeline Mikan doesn't come back (duh, I'm sure she is dead), but a boomerang does. It's funny because it relies on you knowing what a boomerang is and assuming Mikan is alive.