The best slow f*ck song ever is "Je t'aime moi non plus". They say Serge Gainsbourg recorded Jane Birkin an having an actual orgasm in the studio.
"Je vais et je viens, entre tes reins" ("I go and I come, in between your loins")
"Tu es la vague, moi l'île nue" ("You are the wave, I the naked island")
"L'amour physique est sans issue" ("Physical love goes nowhere")