Travelers on the Mexico City Metro recently spotted this rather unusual looking seat - with a penis and protruding male chest built into the molded plastic, and a sign labeling the seat 'for men only'.

The seat features in an online video in which a number of male passengers appear shocked as they attempt to sit down. A sign on the floor immediately below the seat reads: "It is annoying to travel this way, but not compared to the sexual violence women suffer in their daily commutes."