Inked

My son is obsessed with human anatomy.  This week's questions have lead to lengthy discussions on fallopian tubes and egg fertilization.  In fact, he's avoiding baths right now to preserve the "awesome tattoo" he gave himself.  It's three sperm trying to penetrate an egg.  See it?

After extensive study of the female reproductive system, Asher asked the inevitable "But how does sperm get inside the female in the first place?"  Dun dun dun...

Probably the only question I wasn't prepared to answer.  I called Nate in a panic, "What do I tell him?"  

"Tell him the truth." he said.  Just like that.  At the ripe old age of five my son is well versed in the birds and the bees.  There's just one thing he can't get quite right--women have a few too many holes to keep track of.  The pee hole, the egg hole, and the...what's the other one?