So, what do you call 'em?
My favorite name for the penis:
schwanz, as used by George Carlin.
And yours? Female nicknames welcome, I just don’t have any good ones.
I like pecker. Just sounds cool.
I don’t really like any of the common nicknames for the female bits, and haven’t come up with a good one of my own.
Mr. Happy! 
I refer to my “female bits” as neko, the Japanese word for cat. My last boyfriend had Li’l Joshie (his name was Josh) but I’ve yet to stumble upon a name that I like for my current boyfriend’s genitalia. I happen to be rather fond of both words ending in “ck” for the male anatomy – that “k” sound just makes 'em sound really sexy, to my ears.
His??
Heim and the Lads. ((long story))
Mine??
Twinkie
Lord Gargantuous von Throbbicus. Or Lil’ SPOOFE, to his friends (you wanna be Lil’ SPOOFE’s friend?).
In a jocular context, “Junk” is good for strict laugh-factor . . . “So i’m sitting there, adjusting the junk, and my mom’s just staring at me, horrified that i would do such a thing at the wake . . .”
Santa…it all goes back to this cool pair of Santa decorated Boxers I had a few years back. They met their untimely demise and I have only in the last week found a substitute so Santa may finally resume his…umm…gift giving duties, that’s the ticket…duties.
The Incredible One-Eyed Wonderworm!!
Or,just Bubba.
Little Sequoia!
“it”
From an episode of Mad About You, an ex of mine and I started using the term “schmecky.”
The SO calls his “Stanley” The power drill.
PERCY
so, in polite company, you can take your leave by saying “just going to point Percy at the porcelain”.
Unit and the Nards
(band name?)
Gilligan. My little buddy that gets into trouble all the time.