They order one meal between the 2 and go and sit down.
The guy in the booth next to them notices they’ve only got one meal and offers to buy them another one.
The elderly man says “no thank you we share everything”
So the elderly man then cuts the burger in half and gives half to his wife. She starts to eat and the elderly man just sits there.
The man in the booth looks over again and this time notices the elderly man isn’t eating yet. So he asks “why aren’t you eating as well?
The elderly man replies “I’m waiting for the dentures”