The Most Inappropriate Birthday Card Ever

I don't tend to buy many birthday cards. Kid birthday cards always seem so trite to me, so instead the wee ones make them - and they love doing it. They know now that when we have a party, they get to take a piece of paper, fold it in half and create something that is meaningful to the child whose birthday they're attending.

This past Sunday, we had a birthday party, and each of the wee ones created a card. They've been doing this for long enough that I don't check the cards, especially when we're in a hurry. They know how to make them, and they generally do a pretty good job - once I remind them to write who the card is from, that is.

Little Miss created this card. I didn't see it until after the present was opened. I will be revising my policy going forward to include mandatory review by Mommy prior to "completion" of the cards.

Spelling/grammatical corrections have been made for my sanity.
"Dear X,
Happy birthday. Hey I've got a joke for you. How do you tell when when a moth farts? He flies straight for a second. I've got another one: What smells like banana noses(?) and is yellow? Monkey vomit. What would you (do) if you charged you? Pay him cash. (little balloon) I'm out of cash; will you take a credit card?"

Ok, so it's a little funny. But where my sweet little six year old girl came up with those jokes.... Oh I'm not looking forward to the teenage years. Any suggestions for me?