Original sentence: Also, these are usually white.Another story is that Mrs.In swimming, there should be much less friction than normal people.Sakura made the briefs out of trunks because they made her grandson keep falling down.Since cricket balls are very hard, they can damage boy's sex organ when they are playing cricket.That is the reason why we can see so many white skimpies in Japanese comics for boys.Therefore, they use briefs which are tight and sticks their butts and sex organs.These are used in cricket and swimming in terms of sports.They are really popular until they are in the 1st year in Middle Schools.You hardly can see boys with other pants but briefs in white or characters until they are in 6th grade (year 6) in Korea or Japan