Buster Keaton in "Safety Last"
Keaton is trying to help his friend evade a cop.
To do this he writes "eM kciK" in white chalk on a wall.
When the cop approaches Keaton to ask where his friend is, he backs the cop into the wall so that the chalk gets on the back of the cop's dark colored uniform.
A minute later the cop approaches the town drunk, who then starts kicking the cop...so the cop is then occupied with the drunk who is kicking him.
That's Harold Lloyd in "Safety Last," but point taken. Lloyd probably got the most laughs of any of the comedians working in the 1920s.