Grandmotherly and Grandfatherly Advice to Grandchild of Opposite Gender

{link » A nice old story that will make you appreciate family}

“[T]he jewel in the crown of grandmotherly advice, occurred when I was only about 13. We were sitting in a park having just finished collecting some 40 soda bottles for the deposit money on a beautiful spring day.

She told me that one day, I would find a wonderful woman and start my own family. ‘And always remember this thing,’ she said. ‘Be sure you marry a woman with small hands.’

‘How come, Grandma?’ I asked her.

She answered in her soft Newfoundland voice, ‘Makes your dick look bigger.’”
 — H/T Old Dude via Theo Spark

This useful advice from a grandmother to her grandson, advice a grandson is not likely to get either from his parents or from his grandfathers, got me thinking: Since I am my three granddaughters' only living grandfather, what correspondingly useful advice could I offer my granddaughters at a correspondingly appropriate age?

Which brings me to the following story:

{link » She lost her virginity and accidentally texted her dad}

“Meet Elizabeth (Lizzy) Frisinger 18; isn't she precious? She is also mind-blowingly stupid. Elizabeth, a Senior in Cleveland, went on a class trip where she lost her virginity on the beach. Apparently it was ‘gr8’.

We know this because young Lizzy was so excited about her conquest she texted her friend; except it wasn’t her friend; she had accidentally texted her dad.

Class trip finished. Cue a slap to the forehead and widespread humiliation on the internet.”
 — Samantha DeWitt

My oldest granddaughter is only 9, so there is plenty of time (hopefully) before any advice on such matters needs to be conveyed by me. But when the time is appropriate, my advice to my granddaughters would be:

Do not, I repeat not, do what Lizzy Frisinger did! This is way more information than your father [either of my 2 sons] ever needs to have about you.

I am guessing this is not the sort of advice my granddaughters are likely to get either from their parents or from their grandmothers.