I don't know about official, but I feel that you can only post in the drunken thread whilst drunk. So perhaps you can only post in this one if you're hungover or have a tale to tell about the previous night,
Drunken thread is the place to go WHILE the shit is hitting the fan. This thread is the sad moment when you have to wake up and clean the shit off the walls.
Ergo, backspaces are allowed here, amidst the shame and depression.