My middle child just asked me what I have instead of a willy, "yes, but what's it called?". Told him to ask me again later as I haven't even thought about it before now. I want to go with vagina, but is that too grown up? Also, have heard the word flower used before and I find that a bit creepy. Any ideas??? He's 4 (with 2 brothers, 6 and 2).