A guy with piercings, tattoos and a mohawk is looking at the camera while lounging in a chair.
A male model with a mohawk, tattoos, and piercings strikes a lazy pose in a lounge chair for the camera.
Just because one is lounging in a chair, it need not be lazy pose.
Someone can have piercings, tattoos, and a mohawk without being a male model. You can lounge in a chair without striking a lazy pose (for example, the pose could be provocative, or as the result of hard labor). You can lounge in a chair that is not specifically a "lounge chair".
A guy can be many things other than a model and a guy may be lounging without posing intentionally and lounging does not necessarily mean one is sitting lazy fashion and a guy may look at a camera without having his picture taken therefore he would not necessarily be posing for the camera.