Aunt Fanny's Tour of Booty

Robots is a 2005 American animated science fiction comedy film directed by Chris Wedge and written by David Lindsay-Abaire, Lowell Ganz and Babaloo Mandel. Produced by 20th Century Fox Animation and Blue Sky Studios, it stars the voices of Ewan McGregor, Halle Berry, Greg Kinnear, Mel Brooks, Amanda Bynes, Drew Carey and Robin Williams. The story follows ambitious robot inventor Rodney Copperbottom, who seeks employment at the company of his idol Bigweld in Robot City, but discovers a plot by its new CEO Phineas T. Ratchet and his mother to forcibly upgrade the city's populace and eradicate struggling robots, known as "outmodes".

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.