Turtles pee in large volumes when frightened.
Just in case you find yourself driving along and see a turtle upside down in the road and decide to stop and flip him over. Even if you get an umbrella cause you're scared to touch him cause he's kinda big and may bite your finger off. Just be mindful where your feet are, especially if you are wearing flip-flops. If they happen to be just behind the upside down turtle's back end, there is a good chance when you nervously touch the turtle with your umbrella, you are going to get the unexpected little surprise of being sprayed on your semi-exposed feet with large, seriously large, amounts of turtle pee.
Don't say you haven't been warned.