My friend in the office told me a funny story that I want to share. His friend, Jane Doe, is out at a bar and meets a good looking guy who apparently had a glass eye.
Jane didn't realize he had a glass eye at first. However, as the drinks began to add up, apparently one eye became bloodshot and the other did not. That's how she found out.
Hm...drinking as a litmus test for glass eyes. Highly effective!