I do this to my wife every now and then. I can't recommend it to everyone, but it does make for some interesting mornings.

Wife: Do you have a busy day today?
Me: Response = 1;
Wife: What?
Me: Goto PreviousResponse;
Wife: Oh, jeez...not this again....
Me: While response = 1 { print "yes"}
Wife: Nevermind.  (sound of hair dryer.....)
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The looks the kids give me during dinner are priceless.

Update: Changed line 4 to correct metadoktor's response. Original read "Me: Goto to PreviousResponse;" So, ++ to metadoktor.

If things get any worse, I'll have to ask you to stop helping me.