Gray: Want to hear about a joke?
Me: Sure.
(Now I didn’t think Gray knew what a joke was let alone actually had one memorized, so I’m intrigued.)
Gray: How a bird flies?
Me: How?
Gray: It just flaps its wings! Hahahaha!
(So apparently he knows the structure of a joke, but maybe doesn’t really get the humor part. Still, pretty neat.)
Gray: Want to hear about another joke?
Me: Of course.
Gray: How do you “ribbit” like a frog?
Me: How?
Gray: You just talk! Hahahahaha!
(I can’t help but laugh because he is so darn cute.)

He is very seriously thinking about why you laugh after saying this things to him.
gray is good at jokes, but he’s been telling me lately that he doesn’t have any more. i hope he thinks up new ones soon.
Aw, really? That’s too bad.