We Bring You This Reader's Digest Moment With Profound Reluctance

Bus driver, over loudspeaker: Okay, who can tell me which of these sentences is correct: “the yolks of the eggs *is* white?, or ?the yolks of the eggs *are* white”?
Passengers, after some discussion: The yolks of the eggs *are* white.
Bus driver: The yolks of the eggs are *yellow*! Hah! So much for college!
Passenger: That's not a very good “yolk.”
Bus driver: Ah, the yolk is on you!

–M101 Bus

Overheard by: I was only on this bus b/c the !@#!# M98 never comes