You run quickly, and manage to corner Bookworm as the others slip
away. He's pinned by a wall, and he's afraid of you.

"Give up, Bookworm!", you yell.

"Only if you can prove you're smart enough to catch me. Solve my
riddle and I'll go peacefully."

"Shoot." You hope the riddle isn't too hard.

"What walks on four legs in the morning,two legs in the afternoon,
and three legs in the evening?"

You think about it for a minute, and get a rather interesting
flashback from literature class- a class you thought you had
slept through. Two answers spring to mind.

1) An Opossum

2) A Man

3) Quit