Complex sentence: There is a special chair for this purpose-called "sukebe isu" which means "erotic chair"-with a "U"-shape seat which causes the genitals hang loosely and thus easy to wash.
Split into simpler sentences: There is a special chair for this purpose, called "sukebe isu" which means "erotic chair". This chair has a "U"-shaped seat, which causes the genitals to hang loosely, making them easy to wash.