Penis:
- schlong
- johnson
- little _____ (whatever the guy's name is)
- weiner
- wee-wee
- pee-pee
- peter
- willy
- manhood (never been a fan of that one)
hmmm i'm sure there's more...
Vagina:
- muff
- taco
wow those are the only ones I can think of... that's terrible...