I was reminiscing the other day about when I used to work nights, and I remembered this funny commercial run I heard one time in the very early morning. It was a Skittles commercial followed by a Listerine commercial. It went, "Skittles. Taste the rainbow! - (lips and tongue smacking with morning mouth) - YUCK!". The next time it played, they where in the reverse order. Timing is everything.