HAHAHA yes guys, keep bringing on the bad musical sex puns.
The progression of Tommy, Harry, and Liz's responses had me laughing insanely. Especially the pictorial representation of "OH. SNAP."
As for a SILF...
Oceansize: Music for a Nurse (kind of sentimental like)
Ratatat: Seventeen Years (I'd tap that)
The Faint: I disappear/Take me to the Hospital (and any STDs that accompany screwing The Faint)
Anything with Porcupine Tree ("Buying New Soul"!!!!), long solos, and guitar wailing... er, wanking.