Ross finds a way to make Emma laugh - singing Sir Mix-A-Lot's "Baby Got Back." Needless to say, Rachel isn't as amused, once she finds out. Meanwhile, Phoebe meets Mike's parents and tries her best to leave a good impression. Also, while viewing Richard's old apartment, Joey and Chandler discover a video tape with Monica's name on it, which causes Chandler to freak out, since he thinks it's a sex tape.