From Der Bärenspiegel, 1929.

Reblog if you're a clown on an ice floe in the rain.  From Southwest Texas State Teachers College's 1919 yearbook.

Reblog if your hat sprouts mushrooms in the rain.  From Le Charivari, 1887.

From Le Charivari, 1889.

From Le Charivari, 1889.

From Kent State's 1929 yearbook.

Rain always looks like this to those with slow metabolisms.  Also note that he has a cat's eye.  Cats can slow time, which is how they're able to catch mice at seeming lightning speed from the observer's perspective.  From American's 1985 yearbook.

Here's a precursor to Singin' in the Rain.  From Le Charivari, 1880.

"Save your pants for a rainy day."  From Mechanix Illustrated, 1940.