That strange phenomenon wherein you have a child, raise him, house him, clothe him, feed him and provide for his education and entertainment. You love him unconditionally, would lay your life down for his. But "parenthood" is when you calculate the cost of all his toys, all his video games, all his clothes and food and educational tools...
...and see him sitting on the sofa, buck-naked after a shower - on your own rainbow-colored bath sheet - and he's playing with...
...kleenex and a fan.
And he's laughing hysterically.