Tonight's new episode of Glee takes on the serious topic of sex STDs and showcases the boys in an old-time newsreel-style video that gives tips for stopping the STD epidemic in its tracks.
In the episode, Artie (Kevin McHale) tests positive for a disease and is forced to tell his sexual partners.
VIDEO: Gwyneth Performs Happy On Glee
Meanwhile, Kurt (Chris Colfer) and Blaine (Darren Criss) have relationship issues when Blaine puts on his "freshman fifteen."
Watch the entire sneak peek of tonight's all-new episode, airing at 8:00 p.m. ET/PT on FOX.