So I was just shaving and realized I mostly learned to shave from a scene in Lethal Weapon 3. Neither my dad or step-dad really needed to shave as my hairy mess of a face comes entirely from my mom's side of the family.
So, Danny Glover teaching his movie kid (who I share a name with) pretty much is how I learned to shave. Which I think is bizarre.
So what stuff have you learned from a movie that you think is an odd source of knowledge?