The proposal: Fireworks

It was July 3rd and there were fireworks overhead.
And then fireworks spilled out of Kelly's mouth...

Bill: How long has it been now? Five years?
Kelly: Yup. Five years this month...
Bill [getting down on one knee]: How about we make it official?
Kelly [totally and completely shocked]: Are you f'ing kidding me?!
(Except she didn't say "f'ing.")

(I apologize to anyone right now who is shocked and horrified, but that is what I said. I have a foul, foul mouth. I know, I know -- what a shame for such a lovely girl, blah, blah. What can I say? I'm gross. -kelly)

Bill: No! I am not kidding! Will you marry me?
Kelly: [suddenly the fact that Bill has a ring in his hand sinks in -- he's serious!] Of course! I would absolutely love to marry you!
Everybody: Awww!

Later on, Bill said, "Why on earth would I joke about such a thing?" So, to clarify: The question "Are you f'ing kidding me?!" really meant: "Why would you f'ing joke about this?!"