I usually just say penis, but otherwise I say dick. Cock is more sexual, but I actually use it more in reference to a strap on than an actual penis.

I prefer and use cock most of the time. I don't like dick ... to me it sounds cheap. Sometimes I'll use penis.

your joystick.

this is an interesting one. my dad's name was dick and my fiance's name is willie. i generally say "peen" in conversation, i think i say "cock" in the bedroom.

someday i think we should name our son peter just for the lulz.