To-the-point signs at the art school

I admire the straightforward, somewhat threatening style of the signs in the bathrooms in the art school at U-M:

I like to think the terse wording and minimalist graphical style of these signs reflect something about the philosophy and aesthetic particular to the School of Art & Design.

I suppose I fantasize that this is what signs look and read like when people's need for artistic flourish is entirely diverted away from signs and into other pursuits, so that all that remains is content in its purest form.