The Charlie Chaplin mustache, also known as the toothbrush mustache, or perhaps, (who are we kiddin’?) the Hitler mustache, was actually a popular style of facial hair in the 1920s.  The mustache pretty much lost its appeal as it became increasingly connected with Adolf Hitler.  It is rumored that Hitler wore the ‘stache because it properly fit under a gas-mask. Perhaps he should have ditched the gas-mask instead of ditching 66% of a normal mustache.   Hitler ruined a once totally acceptable style.  It’s similar to how hipsters ruined everything truckers, farmers, and old men in general like to wear.