Mark Wright, the insatiable bisexual gay, is back for another round of his favorite pastime - pissing! In "Part 4," Mark's sexual appetite is on overdrive. He starts by teasingly stroking his thick, uncut cock, letting his pre-cum drip onto the floor. Then, he positions himself over a large glass, his tight asshole clenching as he forcefully releases a stream of golden piss, filling the glass to the brim. Mark's moans fill the room as he continues to drain his bladder, his body writhing in pleasure.