The boys have been discovering jokes the last couple of months. Knock knock jokes seem to be the favourite, maybe because the timing is fairly easy to get. When Benjamin tells a knock knock joke, he actually knocks with one hand in the air when he says "knock knock."
Here are some of the boys' favourites:
Don't cry, it's only a joke.
Will you remember me next week?
Will you remember me next month?
Will you remember me in five years?
You forgot me already!
Here's my new favourite:
Me: I have a knock knock joke for you.
Me: You start.
You: Okay. Knock knock
Me: Who's there?
You: (awkward pause as you realize what's happened, then giggling together at its hilarity)