According to an article on The Business Insider website, there are 8 drinking mistakes we should avoid at all costs. These include:

1. Pouring your own drinks in public
2. Waving down the bartender
3. Showing up empty handed to a party
4. Using tacky cocktail umbrellas
5. Mixing alcohol with energy drinks
6. Putting the ice in your drink last
7. Pouring beer from the wrong angle
8. And possible the worst – Drinking too much!

Source: Business Insider