Farmer’s Daughter And Her Punishment Pony (1977)

The whole thing happens on stage, with this brunette chick bent over a mechanical bull. She’s slim, early 20s, and clearly into the vibe. The guy behind her is older, muscular, and wearing a cowboy hat. He fucks her from behind while she rides the bull, hands gripping it tight. There’s a lot of close-up shots, especially when he’s thrusting hard. At one point, she licks his finger while still riding the bull, which is a unique touch. The lighting is dim but focused, giving it a gritty, raw feel. No frills, just straightforward action.