We have discovered knock, knock jokes and there is one that will just make our kids dissolve into a fit of laughter. One evening I read some jokes to the kids and they'd laugh a little, but there was one joke that made them giggle so much that they couldn't stop. They've continued to share that joke many times. Even Malakai tries to tell the joke!
Here's the joke in case you hear it from them:
Anita go to the bathroom!
Malakai's version sounds more like:
Eeda go potty!
And then he busts out laughing. You typically don't get a chance to answer since he says all the parts of the joke himself.