A storm is coming

Have any of you ever had to go to the bathroom super bad especially on a road trip? I really hate that feeling. It is always weird that whenever you need to go really bad, and you approach a single person bathroom, there is always someone in there. And whenever I don't have to go that bad, no one is in there. When I really have to go and someone is in a bathroom, I feel like knocking on the door, and saying "Let me in! A storm in coming!" Has this ever happened to you? I bet it has