Hey, think about it, its like Christmas with the family isn't it. How many of us could retain our sanity living in such close proximity with people, no escape and the pressure piled on. It's inevitable there are going to be fireworks, great fun though)

Exactly. I am constantly amazed at how some of the HMs get called two faced because they dont like another HM but are polite or even friendly towards them. We have all been in positions where you cant stand someone but you retain at least a veneer of civillity and have conversations with them even if you dont particularly seek their company out. It is all magnified a thousand-fold when you are living in close confines with them and keeping the veneer of civillity is necessary to ensure that there isnt an explosion like last night.
Certainly if I was in the BB house with Marco you would find me being polite to him when I was in his company, even friendly as he has some good points. He does however irritate the hell out of me with his more flamboyant gestures like seal clapping and "Oh my God". That wouldnt make me two faced but more of an adult than someone who showed exactly how they feel all the time. The diary room is supposed to be the place where they can spill how they really feel inside.
Nearly all the HMs behave in that fashion though some cannot see it. i.e. Marco who calls people how he sees them in the diary room but not to their faces and yet thinks it is everyone else who is "two faced".

it does sound like the average saturday night at home hehe