Ah, summer... the season of vacations, water sports, and barbecues. But if you're not careful, your fun in the sun could turn into a blistered nightmare. These folks forgot to take advantage of modern science by putting on their SPF and ended up REALLY feeling the burn!What's the worst sunburn you ever got? Without the proper precautions, even a few minutes outside could turn into days of painful regret. If you're anything like me, you're that person on the beach with a T-shirt on, hiding under an umbrella for good measure. But that doesn't mean there isn't some fun to be had with sunburn.Awful as it may sound, some of these people got in the worst positions possible, leaving them with hilarious tan lines and red patches they won't soon forget. And neither will we. So slather on some sunscreen and check these out!