Ever took a swig from a beer or soft drink can that a wasp had flown inside? Fortunately I haven't but I have a good friend who did once and got a very painful sting on the inside of his lip. Avoid this by turning your can's tab around so it can keep wasps and other large flying insects out of your drink.
Reddit user The_drowning_poop gives this tip. We've covered in the past how you can thread a straw through the can tab to keep it from rising which uses the same tab position and will also keep wasps and similarly-sized insects out of your drinks. Just watch out for ants and fruit flies attracted by the sugar.