It's quite simple really.
Are you planning on a sensible night with a few tinnies? 4.
Are you wanting to get wankered but still make sense by lunchtime tomorrow? 14.
Are you wanting to get utterly trashed and wake up the morning after the morning after? 24.
Are you part of a suicide cult? Yeah go with 104, sure whatever.
It does. I'm in the UK so 90% of the lagers or beers are between 4 and 5%.
If you get on the Special Brew then going into double figures will probably ruin you the following day. That said, start hooning a couple of slabs of Carling C2 and you'll spend most of your time sobering up pissing in the bog/up the neighbours fence/in your mate's wardrobe in the middle of a dream.