"Stacy's Mom" is a pop rock song by American rock band Fountains of Wayne. It is the third track on their third studio album, Welcome Interstate Managers, and was released to radio as the album's first single on May 19, 2003, through S-Curve Records and Virgin Records. "Stacy's Mom" was written by bassist Adam Schlesinger and vocalist Chris Collingwood, both of whom produced the song alongside Mike Denneen. Its subject matter was inspired by a friend of Schlesinger's when he was young who was attracted to Schlesinger's grandmother. It is a power pop song with which the group hoped to emulate the sound of American rock band the Cars.