During intercourse make truffle butter, and a lot of it. Once you have enough to fill a large ramiken or small bowl, take a torch to the top of it similar to baked alaska
When a girlfriend/wife/fiancee sucks on another man's cock for their boyfriend/husband/fiance. This is usually for a hotwife/cuckoldrelationship and for the viewing pleasure of the man.
Most couples enter a hotsuck-only phase before a full hotwife/cuckold situation with penetration.