Sexiest Pop Song Ever?

What do you think is the sexiest pop song ever (not classical, jazz etc.)? I'm a guy, so I'm pretty much scanning through the portfolio of female pop music over the last 40 years or so. I can point to some sexy Kate Bush tunes (Wuthering Heights), Joni Mitchell (take your pick), some good stuff from the female singers of Zero Seven, Carly Simon, Christine McVie, Chaka Khan, Diana Ross et. al.

For me the song that gets my testostaroni going is "Sarah" by Stevie Nicks, off the Tusk album. The opening keyboards and her angelic voice do it for me like no other. When she sings the line about "undoing the laces", well it doesn't get any sexier to me. A truly great song.

Now what's yours?
serge gainsbourg and jane birkin.......'je t'aime(1969)....they still will not play this on many oldies stations, even though it was #1 over most the world. nothing comes close......Jane Birkin still records good records and looks incredible.
Don't know if it's the sexiest ever but try Lucinda Williams' Right In Time:

"I take off my watch and my earrings
My bracelets and everything
Lie on my back and moan at the ceiling
Ooh, my baby
Think about you and that long ride
I bite my nails, I get weak inside
Reach over and turn off the light
Ooh, my baby...."

All sung in an appropriately breathy, sexy voice.
i second the look of love,dusty or diana kralls versions is pretty good,havent heard claudia longets version,back in the day midnight at the oasis was the song,or am i just old?probably.