Can I flip a turtle upside down on purpose?
Why would you flip a turtle?
Because they annoy me and I hate them.
If you flip the turtle it won't be able to turn itself back over. It will either starve to death or get eaten by a predator.
It's important to ask yourself what the turtle is worth to you.
It does not matter what an animal is worth to me personally it is always wrong to harm an animal.