"Boys Have A Penis, Girls Have A Vagina"

Teaching children makes a language very easy to learn. There are only so many times I can hear a kid refer to a spider as kumo before the word sinks into my own head.

Yes, I have learned much from these very little people. One of the smallest children I teach is a 3-year old named Momo. Momo is tiny. Even for a Japanese person. Even for a 3-year old. She is the smallest student I have, rising to the shoulder-height of most of her classmates. Yet, her character is larger than that of most Japanese adults. With such a lively personality, she has taught me a thing or two. Most recently, she has taken a shining to the Japanese word for penis.
"Momo, how are you?"
"I'm ochinchin."

Teaching a lesson on Christmas, I show a big picture of a snowman. "Everyone, what's this?" I ask.
Some students mutter an unrecognizable answer in Japanese. Others fight the urge to stare at the curly locks on my head. Still others fight the urge to stare at the underside of their eyelids (they've recently been broken of their daily post-lunch nap routine). Momo's voice rises above them all: "O-CHINCHIN!"
"Oh, so very close Momo. It's a snowman."

We get to a big picture of a present, and I ask the students if they like presents. We get them to respond with "I like so-and-so." "I like DS." "I like cake." ("cake" when it's bastardized like so many other foreign words, becomes "ke-ki"). Tiny Momo, all of 3, shouts, "I LIKE O-CHINCHIN!"
"Not until you're older," I reply.

Have I mentioned one of the ups is that they have little to no clue what I say to them most of the time?