this made me laugh

I don't know why this struck me funny but it did.  I heard an ad on TV yesterday for dentures.  Now that, in itself, isn't funny but they were advertising "buy one, get one half off."  Does this mean if a person gets an upper plate, they only pay half as much for the lower?  Or amybe, if you want a spare pair that would be half price?  Do people usually get a spare pair? Or maybe you and your spouse could take advantage of the offer, sort of a buddy system?  All this pondering about dentures reminds me of an incident that happened to a friend of mine.  She and other family members were in the habit of asking her grandfather, who was in assisted living, if he had his dentures.  I guess he had a habit of misplacing them.  Evidently, he got tired of being bugged about his dentures because when the family gathered for one visit with him, and someone asked the inevitable question, he answered "Yes, I've got my d.... dentures." and pulled out a pillowcase full of dentures that he had pilfered from rooms up and down the hall.  Returning them to the proper owners was not an easy matter.