The Mother: Have you ever tried it?
The Bro: No. Why would anybody do that?
The Mother: If you put a whole egg in your mouth what would that make you...
The Bro: (he cuts her off) A snake!
The Mother: I should stick an egg in your mouth now.
The Bro: WHAT?! I don't get it!!!
The Mother: Can you talk when you have something as big as an egg in your mouth?
The Bro: No.
The Mother: *waits for him to get it*
The Bro: *he doesn't*
The Mother: (with exasperation) It means 'shut up'.
The Bro: OHHHHHHHHHH! Go suck on an EGG!
Me: *facepalm* I bet the duck's in the hat.