Mark Wright, the tantalizing crossdresser, returns with a new craving. In "If Only You Knew... Part 4," Mark's thirst for a taste of your piss is overwhelming. He can't help but swallow his own juices, but it's not enough. Watch as he teases and taunts, his body aching for that forbidden delight. Three voters join in, their own desire growing as they watch Mark's hungry performance.