How to laugh

At dinner tonight the twins were telling each other jokes. Here is a word for word transcript:

Jonathan: Hey Troy, what did one spoon say to the other spoon?

Troy: I don't know.

Jonathan: Do you want to play hide and spoon?

Both twins: hahahahaha

Troy: Hey Jonathan, what did one crab say to the other crab?

Jonathan: I don't know.

Troy: Do you want to play hide and crab?

Both twins: hahahahaha

At this point, I started laughing. Then Kevin said, "Hey, how come you're laughing at Troy and Jonathan's jokes but you never laugh at my jokes?" And that made me laugh even harder. From that point on all three boys kept trying to out-joke each other, but the set-ups and the punchlines were all the same.

"What did one chicken say to the other chicken?" "Do you want to play hide and chicken?"

"What did one dog say to the other dog?" "Do you want to play hide and dog?"

Each punchline was followed by an uproar of laughter. Then, since they are boys after all, they started throwing words like pee and poop into their jokes. I had to put an end to the laugh fest at that point because we were trying to eat dinner. I know, I'm no fun at all.