1. A woman not quite old enough to be a grandmother but has grandchildren.
2. Grandmother younger than age 50 that refuses to be called grandma.
3. Sexy Asian female age 20-25
4. A youthful vagina punani
" my daughter just had a baby but I refuse to be called anyone's grandmother until I'm at least 55. Im too young and still too hot for that...So they call me Nani"
" I told my daughter, "your children don't have a grandmother, they have a Hot Young Nani!"