Presh Talwalker reports:

After a late night out, I found myself at the only eatery still open in the suburbs, the late night haven that is Denny’s.  When paying for the meal, I noticed a curious offer on the receipt that read something like:

If your receipt does not list a food or drink you ordered, let us know and you will get the item free plus a $5 gift certificate.

Which, as Presh deduced, is a counter-bribe from Denny’s management so you will rat out your server if he or she bribes you with free food in return for a tip.