GLEE: Will (Matthew Morrison, L) and Coach Beiste (guest star Dot-Marie Jones, R) watch the glee club perform in the "Blame It on the Alcohol" episode of GLEE airing Tuesday, Feb. 22 (8:00-9:01 PM ET/PT) on FOX. ©2011 Fox Broadcasting Co. C Photo

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In the all-new 'Blame It on the Alcohol' episode, airing Tuesday, Feb. 22 (8:00-9:01 PM ET/PT) on FOX, PRINCIPAL FIGGINS (guest star Iqbal Theba) teaches the student body about the danger of underage drinking, and the glee club is personally touched by the message. Meanwhile, MR. SCHUESTER (Matthew Morrison) and COACH BEISTE (guest star Dot-Marie Jones) ignore Figgins' warning and get into a bit of trouble. Check out a sneak peek from the February 15 episode below!