There is really no way to get around the Marx Brothers when talking about Vulgar Comedy. They might be the most prominent example.
It is really a pity there is no video clips saved from their Vaudevilles that they played on stage. I haven’t even gotten a hold of their first movie Humor risk from 1921 either, a movie where they had not gotten their characters set yet.
But we can still enjoy those great films. Here is a few clips: