We’re kind of stupid that way

Panel 1
Calvin: “So long, Pop! I’m off to check my tiger trap!”
Dad: (working on something, looks on)

Panel 2
Calvin: “I rigged a tuna fish sandwich yesterday, so I’m sure to have a tiger by now!”

Panel 3
Dad: “They like tuna fish, huh?”
Calvin: “Tigers will do anything for a tuna fish sandwich!”

Panel 4
(Hobbes is hanging upside down from a tree branch, eating the sandwich.)
Hobbes: “We’re kind of stupid that way.”
Caption below: MUNCH MUNCH