In England, when you go to a pub or bar and buy a drink you do just that. You ask for a drink, like a bottle of larger or a shot of vodka, they say how much it is and you pay. If you want another you repeat the process. But whenever I watch all the US TV, you seem to go to a bar and not pay till you leave. If I'm not clear, you can ask for a whiskey, drink it and get another. Chill for a little then pay at the end for everything you've drank. Can someone clear this up? It's something I've never understood and I've meant to ask for years, am I picking it up wrong? How does it work?