Waiting for your Teeth??

From Argentina

An elderly couple go into a fat-food outlet, where they carefully split a burger and fries. A trucker takes pity on them and offers to buy the with her own meal.
"Is all right" says the husband. "we share everything".
A few minutes later, the trucker notices that the wife hasn't taken a bite. "I really wouldn't mind buyung your wife a meal", he insists.
"She'll eat" the husband assures him. "We share everything".
Unconvinced, the trucker implores the wife. "Why aren't you eating?"
The wife snaps, "BECAUSE I AM WAITING FOR THE TEETH!!!"