“Oh… my… God, Becky. Look. At. Her. Butt.” It may be one of the most unforgettable opening lines of a song in the history of popular music. Say those words and they instantly conjure images of rump-shaking models, a pair of very annoying Valley girls, Cosmopolitan magazine, Jane Fonda, Ross and Rachel’s baby on Friends, Shrek, high school dances, bar mitzvahs, keggers, karaoke parties, and wedding receptions. The impact of Sir Mix-a-Lot’s “Baby Got Back” was massive, its legacy undeniable. The song was big, thick, and juicy then, and it will forever be big, thick, and juicy.  This week, we talk to the director of the “Baby Got Back” music video, the MTV exec who initially refused to air it, Mix himself, and the iconic, big-bootied model at the center of it all.  See omnystudio.com/listener for privacy information.