All truly good drinking competitions break -er, adapt their rules as they go.
It's quite amazing how many fun things you can come up with once you have passed the bounds of sobriety. For instance, how many people can you fit in a linen cupboard? Is it five or eight? (Unfortunately, we had no-one sober enough to record accurately.) I know you can fit 14 people in a Datsun 120Y -that's a very small car, for you non-Australians. Bigger than a Mini, but only just. If the glove box had been bigger we would have had 15.
I could discuss further how we pushed the envelope as drunken young people but good taste prevents me.