n.: a title given to a humorous, intelligent, and interesting acquaintance with whom all matters can be discussed without fear of judgement and with certain encouragement, and who will also engage in sexual intercourse if prospects of getting anyone else are found to be too dim. Abbr.: S.M.
"My name is Sophie Plesniak, S.M."
1. A name for a sexually stimulating person.
2. The name of a muffin if eaten immediately before, after or during sex. This muffin is usually shared at the breakfast table or in bed after or during a long night of fornication.
1. We shared a sex muffin after 5 hours of playing "find the teacup".
2. That girl, is a total sex muffin.
3. Justin had gone to the supermarket to purchase "sex muffins" for his date that evening.
4. Janet Reno, though very attractive, would not be considered a "sex muffin".