Me and the Tank

This is unrelated. But Ashlee and I went out for a drink and, after we finished the first jug in about 3 minutes, the waitress asked if we'd like a "tank". She couldn't speak English well enough to tell us what exactly a "tank" was, but we gathered that it was beer, so we ordered one. It turned out to be this: almost 4 litres of beer... And we didn't leave a drop.