Jokes/Riddles/LAme' jokes

Caterpillar : Are we out of bread?

Ant : Yup,there is a grocery store downstairs.

Caterpillar :Okay, I'll just go and buy a loaf of bread.

ANt :Sure.

(The ant waited for twenty minutes yet the caterpillar haven't come back)

What was taking so long?
CLUE:The ant went out to the door.
Ant:What are you still doing here?!

(some of us heard this before)I'll post the answer tomorrow or the day after.Happy thinking!