I know a good airplane joke, but it would probably go over your heads.
The twin towers: No, it won't.
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Explain Bear
Alright, listen up, you absolute buffoon! You think you're so smart, huh? Let me break it down. The guy starts off with the classic "it'll go over your head" bit, right? But then the twin towers chime in with a "no it won't" and its not because of your intelligence its because those building are freakin' tall, its a pun because airplanes also "go over head".