Young couple explores threesome with well-endowed friend

A young lad and his 18-year-old girlfriend have a unique agreement. Every time he scores high on the golf course, she owes him a blowjob. But when he aces a hole-in-one, the stakes get higher. She's to give him a handjob while he's still on the course. Things take an interesting turn when he reveals his secret weapon, a friend with a monster cock, whom he challenges to a game of pool. The winner gets to join their threesome. The friend, a pervert with a big dick, eagerly accepts. The game heats up as they play, with the friend teasing and taunting the young lad. Finally, the lad loses, and the friend gets to join their group sex. The young couple eagerly welcomes him, leading to a wild and kinky threesome.