In of Friends , titled " The One With Ross’ Teeth ," the show hits its stride with a masterclass in physical comedy and "vanity-gone-wrong" tropes. The Highlight: Ross's "Glow-in-the-Dark" Dental Disaster

This plot was actually inspired by Matthew Perry (Chandler), who got overly bright porcelain veneers in the summer of 1998.

Rachel becomes embroiled in a misunderstanding where her boss, Kim, believes Rachel is sleeping with Ralph Lauren to get ahead. The episode features a rare celebrity cameo from Ralph Lauren himself in an awkward elevator scene. Review Summary Friends Season 6 Episode 8 Walkthrough - Radiant Comics

The episode's most iconic moment centers on Ross Geller, who leaves a whitening gel on for a full day instead of the recommended time. The result is a smile so blindingly white it literally glows under a black light during his date with Hillary.

To achieve the "radioactive" effect under the black light, David Schwimmer reportedly wore prosthetic teeth or used a mouth glow stick, which is why his voice sounds slightly different in those scenes. Subplots: Femininity and Corporate Chaos

Joey’s new roommate, Janine, begins "feminizing" the apartment with potpourri, flower arrangements, and knitting. Chandler, fearing for Joey’s masculinity, convinces him to rebel—only for Joey to eventually cave because he likes the "clean, dry towels" and "cute little boxes".