Like a teetotaler who gets drunk on Saturdays? Or maybe a straight man who only sleeps with other men on Saturdays? Or a reformed crook who robs banks on Satu

Like a teetotaler who gets drunk on Saturdays? Or maybe a straight man who only sleeps with other men on Saturdays? Or a reformed crook who robs banks on Saturdays? Or a devout Christian who stocks up on indulgences on Friday so they can sin every Saturday?