"the children are just saying things that don't make sense and acting like they're funny jokes" it's called lolsorandom humor and it's a time-honored youth tradition. be cool

When I was like 4, I thought the funniest joke was one I came up with:

Knock Knock

Who’s There

Bookcase Aren’t You Glad I Didn’t Say Bookcase

I seem to have only understood that certain words sounded funny, without quite grokking how puns are supposed to work.