Although I do not have kids of my own, I find this to be sound advice if I ever have a son. From Adam Carolla’s book, In Fifty Years We’ll All Be Chicks, under a section called Parenting Tips:
Show Your Son Your Dick
Before you start calling Child Protective Services, I’m not saying you should sit him down in the living room when he’s fifteen and drop your drawers. Just at some point when he’s old enough to have a fuzzy memory of it, step out of the shower drying your hair with the towel and give him a glimpse. Of course I don’t mean in an aroused state. Maybe get a little blood circulating and just the right amount of baby oil to catch the light. Just once, and then never let him see it again. He’ll think you’re huge. This is an investment in your dick’s future; a 401(cock), if you will. Because down the road he will definitely tell his friends, “My old man’s got a huge honker. I saw it once.” Then word will get around town that you’re packing. You can look forward to some day when he’s in high school and he brings his friends around and they look at you like a god. They’ll be like, “Hey Mr. C,” and give you a high five and knowing glance. What he won’t figure out until he’s in his thirties is that you are just average but looked huge to his waist-high eyes.