Joke

-Mom, can I play on Wii again (yeah...wii is now the most important "thing" in our house...everything circles around it)???
-David, you know we have a rule...only 30 minutes and you're done!!!!
-I was joking...hahahaha...
-I've changed my mind...of course you can play...
-(back on the wii) thanks !!!
-Oh...it was a joke David...