The name Loo could be an abbreviation, shortened or an invention to put the person in line with woman with names like Lou, Lulu, or Lola, to promise erotic adventures.: loo is a 'dirty' abbreviation of Louise. The most well-known example in German film history is Marlene Dietrich as Lola Lola. The Alfred Hitchcock film "Stage Fright" (1950) in Germany was titled "Die Rote Lola" (The Red Lola) for obvious reasons.