Can anybody tell me in layman's terms what the difference between a fruit and a vegetable is?

At happy hour this afternoon, we were surprised that nobody really knew what the distinction was.

Here is a link to faqs asked
to the Department of Horticulture
at Cornell. Scroll down just a
bit, they have an interesting answer.

Fruit vs. Vegetable

Here is the answer from "The Straight Dope"

Fruit vs. Vegetable II

Fruits have seeds.

Wow, thanks for the answers! The stuff from the Straight Dope was especially good...good enough to make my head hurt! :-)