Because Robin ate the worms.
Batman-do
Cl-Cl-Cl-Cl-Cl-Cl-Cl-Cl-Cl-Cl-Cl-Cl-Cl-Cl-Cl-Cl-
So he could flip the bird
He wanted to join the Apple Core (Corps).
Because he ate too much of them.
I ate sand.
Robin, get in the batmobile! (credits to)
Flatman and Ribbon!
In river banks
2 Na!