Flag of Canton of Schaffhausen

On a yellow field, a leaping black ram with golden horns, hooves, penis, and crown, and a red tongue. So... uh... yeah. Cool flag!

The ram is a prehistoric religious and martial symbol of virility and power. Heraldry tends to emphasize virility by always depicting male animals, and Swiss heraldry often specifies the color of genitals. Gold genitals may seem odd, but that was a papal decision that even the Protestant Reformation did not change.