Foggy's reputation as a sex god stems from his attitude rather than the size of his dick or whatever. He's attentive and cozy and wants to make you feel good.
A fic about Foggy and an OC who is really weird about sex (like maybe starts crying in the middle of things), and Foggy is still cool with that. Just give me foggy talking to someone about their sex insecurities in a kind and positive way.