Inspired & borrowed from here
1. You will spend a crazy amount of time clipping their weed-like fingernails.
2. They will also probably have nicer eyelashes than you. (This was my favorite one because that's his famous trait!)
3. Little-boy funk-smell kicks in sometime around age 3.
4. You will totally get peed on.
5. The wardrobe choices can be just as cute as girls.
6. All that said, a lot of times they just manage to pee right on their own heads. Memorize their shocked expression when it happens, it's hiiiiiiiiiilarious!
7. The instinct to turn random objects into guns/blasters/lasers/phasers/swords/lightsabers/arrows/cannons/etc. is something they are born with.
8. Even after many mature, frank discussions about body parts and the differences between boys and girls, you will definitely be asked -- loudly and publicly -- about your own lack of a penis and whether or not you pee out your butt.
9. At some point, you'll have to sack up and send them into the mens' room by themselves. This is both amazing and terrible.
10. Wearing a dress makes you look beautiful, Mommy. A single sequin on your shirt or a sparkly necklace earns you an upgrade to princess. Your hair looks gweat. Your hugs are nice. Your cuddles are the best. I wuv you, Mommy.