Side-by-side video: A shirtless young man with a slim build in boxer briefs is measured by a muscular man in a black shirt; another shirtless man in a white lab coat measures a similarly built man in gray shorts.

Video of three young, naked, slim Asian men in a clinical setting, with blue curtains in the background.

A video of a young, shirtless, tattooed man in black underwear, standing in a dimly lit living room adorned with Christmas decorations.

Video of four young men in a medical office. One man is fully nude, exposing his flaccid penis. Others are clothed in casual attire, standing close.

Video of three shirtless, slender Asian men in a clinic, two with their pants down, one with an erection, blue curtains in the background.

Video of three Asian men, nude, facing away, in a modern, brightly lit room with a large flower painting and a pool in the background.

Video of three shirtless young men in a modern kitchen. One man, nude, stands in the background; two others, one in red and one in gray, sit on a counter.

Video of two shirtless, slender men in a modern living room. One man, standing, has a circumcised, flaccid penis, while the other, seated, holds his hand to his cheek with an expression of surprise.

Video of two naked men in a small, dimly lit room. One man, with short black hair, is performing oral sex on the taller, muscular man.