1. (n.) A smooth, often muscular gentleman who has a way with the ladies.
2. (n.) A word, normally connoted as a compliment, from the era of "Gosh Golly Gee" and "Gee Wilikers," that is used to describe one's sexual performance, appearance, or level of suaveness.
Cameron opened the hotel door during the school field trip, his shirt off and a raging boner under his pants, to find the vice-principal standing outside. He was scarred for life when she commented on what a studmuffin he was.
The phase that an attractive man enters before dad bod. This usually occurs when his partner is pregnant and he is supporting her pregnancy food cravings.
While Charlotte was told she was looking radiant while she was pregnant, her husband Steve was told he better watch his stud muffin top before he had a full fledged dad bod.