Your son was an early bloomer!
/humor
(I understand that your grandson is undoubtedly the child of a different one of your children.)
Regards,
LOL, my 3 kids are aged 37, 35, and 22. FWIW, the 22 YO was planned more than the first two. My grandson is my daughter’s child, who will turn 37 on Monday. The middle child has two daughters, they both have Opa wrapped around their pinkies.