Most people who drink don't realise how obnoxious, tedious, rude, loud or unpleasant they are when they've had a few drinks. And they smell. This doesn't generally happen when you scroll social media or drink a few lemonades. The problem is that people get pissed and think they're being really witty, clever and friendly while the rest of us smile and nod politely and try to sidle away at the first opportunity.