Stop laughing!

<Sweetie does something funny, and I start laughing.>
- Stop laughing!
- <chortling> Oh, but you're so funny!
- <fighting a smile> No I'm not!
- <still smiling>
- <hiding face> Stop laughing at me!
- <starting all over>
- STOP LAUGHING!!!
- <laughing harder>
- STOP LAUGHING!!!
- <trying to stop> I can't stop laughing until you stop telling me to stop.
- <angry face> STOP LAUGHING!!!
- <losing control> How can I stop laughing when you keep acting so funny?
- <pretending to cry> STOP LAUGHING!!!
- I told you, I'll stop laughing when you stop telling me to stop.
- STOP LAUGHING!!!
<exchange continues ad infinitum>

(Can you tell she really enjoys me laughing at her?)