Yesterday the three men who call the International Space Station home did something wholly unremarkable: They drank some water. I know, boring, right? Except the water came from a very special place -- their penises!

Thanks to a new $250 million water-recycling system, the astronauts are able to drink what was once their urine. The finished product is as clean and healthy as water from the tap. Read seven situations in which it is wholly acceptable to drink from your own spigot after the jump.

7. You're Kevin Costner and you're living a post-apocalyptic future world.

6. You're trapped in the desert.

5. You're a Satan worshipper and you really want to freak people out.

4. You're really thirsty at a football game but unwilling to endure the long concession lines.

3. You're lost at sea.

2. You lose a bet during a "Man vs. Wild" marathon.

1. You're hiding in a tree from a lion.

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