Lordy, Lordy, my parents (God love their souls) taught me that my penis was my "tickle box". Where they got that, I'll never know.
I just remembered this tonight and I was reflecting on the most humiliated I've ever been. (You might try that--it turns up interesting stuff.)
I went on line to find nick-names for the penis. One site had 150.
None of them were 'tickle box'.
I was in 7th grade, out on the playground when someone cupped his genitals in his hand and let off a string of names for it.
Someone said, "Jimmy, what do you call your d*ck?"
I looked down and asked, "my tickle box?"
I was the brunt of abuse for weeks after that. Boys called me 'tickle box boy' and girls, who had heard the news, laughed into their hands when I came by.
I'll try to look back and see what I told my children that came back to humiliate them.
I can't think of anything off the bat, but I'm sure there were some things.
Parents and children--it's just like that.