Lost teeth

The boys and I were eating lunch today at Quiznos and a few minutes into eating the boys said "mom, there are teeth on the floor."  What???  Sure enough I looked down and there were a pair of dentures right under our table.  Not the most appetizing thing in the world.  The boys just thought it was the funniest thing ever.  I tried to avoid the conversation since we were eating, but I could not help but wonder how in the world they got there - I mean who just leaves their teeth behind.  Well about 1/2 into lunch the owner came to retrieve them.  I was just embarrassed as she was because the boys were asking her why she let here teeth there.