MGMT - Electric Feel.
This may be the sexiest song I know. Like not the most sexual song, but the most erotic (I have Divinyls for that with close runner ups in Long Blondes and Amy Winehouse). The sexual tension in constant references to electricity and how charged the singer's "electric girl" is and the effect she has on him is delicious. There is that slow driving drum line in the ever danceable 4:4 time (Edit - Apparently only the bridge in 4/4, so apparently I am shit at music. The rest is in 6/4) that you know everything ever is written in at pretty sure is damn close to 60 BPM if it isn't spot on. Very danceable stuff and given the content man I kind of hope it is a lap dance.
Then there is the slap bass and oh god I think my brain just came because Slap Bass is the sexiest thing in existence. With what is described above it is a seriously sexy song.