Knowing age by names

A while back, at an extended family dinner, my then-18yo nephew said his girlfriend's name was Jasmine. Some quick math on the release date of Aladdin told me her age was 17. I didn't think that was any deal, but nephew's mother, I suddenly discovered, had been under the impression the girlfriend was also 18. I had to leave the table as "hilarity" ensued. Oops.

Morning, Glories. Have a day. Howdy to de-lurked srb!