Wiktionary
mack daddy
n. 1 (context US slang English) A pimp, especially a prosperous one. 2 (context US slang English) A flirtatious and seductive man.
Wikipedia
Mack Daddy
Mack Daddy is the third album by Sir Mix-a-Lot, and his first album with a Parental Advisory label. It was released on February 4, 1992, on Def American Recordings. The album is particularly notable for the hit single " Baby Got Back."