If you think the knock-knock joke with the punchline “Orange you glad I didn’t say banana again?” is bad enough, how about listening to two boys debate back and forth how many times you should say “banana” before you say “orange”?
Fritz: You should say it twice. Listen: Knockknockwhostherebananabananawho Knockknockwhostherebananabananawho Knockknockwhosthereorangeorangewho orangeyougladIdidntsaybananaagain?
Billy: No, no. It’s better if you say banana three times. Like this: Knockknockwhostherebananabananawho Knockknockwhostherebananabananawho Knockknockwhostherebananabananawho Knockknockwhosthereorangeorangewho orangeyougladIdidntsaybananaagain?
And so on. If I hadn’t already lost my mind years ago, surely, surely this would send me over the edge!
Reit This Way 
Yeah, that’s an annoying joke. My kids say banana something like eight times. I’m sorry I ever told them that one!
OMGosh!!!
That has been making the rounds (again) in our home lately. In fact, my 2 yr old just did her own rendition, only saying the banana part once (thank goodness) and then her last line goes something like:
“orange gobblety goo banana? ha ha ha!”
Been there, done that :).