1. Dead pool water, a campus swimsuit from junior high school to senior high school in Japan, is usually referred to as "スク water" among gentlemen.

2. In some countries' schools, students usually wear the school's standard swimsuit in swimming class, that is, the campus swimsuit. In order to facilitate activities in the water, campus swimwear generally adopts tight-fitting and conjoined design, which belongs to conservative low-crotch swimwear.