While explaining why cat-gut makes the best tennis racket string, something unusual happens. His mustache gets, umm…a bit “unruly” – in this funny ad for Wahl Trimmers and Clippers. If you need a Beard Trimmer, Mustache Trimmer, or Goatee Trimmer, Choose Wahl over Remington, Norelco or Conair. This ad is hillarious.