I Need to Use the Toilet

We usually say I need to use the restroom. But what is the name of the activity of fluid coming out of the body? What is that called? P. We would we would say P but we also use we. Do you use we? Not really. It sounds familiar though. So I'm thinking maybe I heard it possibly on a British show. Maybe I'm not sure. Okay. Going for a quick we. As an adult as well. And now LA this is where it gets weird for me because you see where she's from napkins are the things babies wear to hold their shits. The thing for your mouth we call a serviette but I didn't know