Whatever you do, don't wear these American flag swim trunks with boxers. The last thing we want is you looking like you're on a middle school field trip to Water World in a pair of American Flag swim shorts that have more freedom fueled fibers than Betsy Ross on a nude beach. Did you just picture Betsy Ross naked on a beach? Yes, you did, but don't you dare take it back. Just don't wear these swim trunks with boxers and we won't have a problem.
...but if you do decide to wear these bad boys with boxers, make sure it's a pair of Ball Hammocks so your boys don't shrink up into the grundle.