Nemo auditur propriam turpitudinem allegans

So, let me explain something called "nemo auditur propriam turpitudinem allegans." This is a very fancy way of saying something that basically means "you can't use your own bad behavior as an excuse for doing something wrong." Let me break it down for you:

Imagine you have a big test at school, but you didn't study at all. So, you decide to cheat on the test by copying someone else's answers. But when the teacher catches you cheating and asks why you did it, you can't say "well, everyone else was cheating too!" This is because of the idea of nemo auditur propriam turpitudinem allegans. It means that you can't use the fact that other people are doing something wrong as an excuse for doing it yourself.

Another example could be if you saw someone else stealing something and you decided to steal something too. You couldn't say "well, that person was doing it too, so it's okay!" because that would be using their bad behavior as an excuse for your own.

So, to sum it up, nemo auditur propriam turpitudinem allegans means that you can't use your own bad behavior or someone else's bad behavior as an excuse for doing something wrong. It's important to always do the right thing, even if others around you aren't.