Another Quora user, Joseph Paul, states that if you’re older than 12 and want to go trick-or-treating, fine. But make sure to put some effort into your costume. In fact, many Quora users stated more or less the same thing: If you’re a teen and you want to trick or treat, go for it! But don’t show up in a costume that clearly took you a few minutes to put together. Dress to impress if you want those free Snickers bars.