However, you could try to convey the meaning using various approaches:
* Informal and Playful:
* "Beau gosse" - This literally translates to "handsome guy," but conveys the flirtatious, admiring tone of "stud muffin."
* "Mignon" - Means "cute" or "sweet," but can be used playfully for a handsome man.
* "Canon" - Slang for "hot" or "gorgeous."
* More Explicit:
* "Objet de désir" - This translates to "object of desire" and is more suggestive.
* "Beau mec" - Means "handsome dude" and is more direct.
The best choice depends on the context and the intended tone.
Remember that translating slang can be tricky, so depending on the situation, a simple "handsome" or "attractive" might be the safest bet.