I went into KFC and ordered an 18 piece nuggets.
The clerk, straightfaced said " we only have 3, 6, 12, and 15 piece nuggets".
Well, playing the straight man, I said Which is cheaper a 15 piece and a 3 piece, or 3 -6 pieces"
She said "I don't know", and called the manager...
Now I have the fish nibbling on the bait, so I asked "While I'm at it, how much is a 12 and a 6 piece".
The manager couldn't figure it out, so turned to the clerk and said" just charge him for 15 pieces".
Keeping it going as long as possible, I said" If you charged me for a 12 and a 3, while giving me 18, is that any cheaper?"
The guy behind me was laughing so hard I thought he was going to have a heart attack (how is that for getting back on subject?)