Gay stepbrother and big brother get fucked by doctor's cock

The scene opens with a young man lying on a hospital bed, his head covered in a towel. The camera pans to reveal his stepbrother and big brother standing over him, both wearing white lab coats. The brothers are discussing the patient's condition, but their attention is quickly drawn to the young man's erection, which is poking out from the towel. One of the brothers reaches out to touch it, and the other quickly joins in. The brothers take turns stroking the young man, teasing his cock and balls with their fingers and tongues. Suddenly, a third man enters the room, a doctor in a white coat. The brothers introduce themselves and the doctor offers to help them out. He pulls out his own big cock and the brothers take turns sucking it. The doctor then bends the young man over the bed and starts fucking him hard, while the others watch and stroke themselves. The brothers switch positions, taking turns fucking the young man and each other, until they all cum together in a messy orgy.