Promo:

When instructor Eric strips down to show David and Jamie the proper way to use gym equipment, he becomes more interested in their equipment. The boys, also eager to play games, mount Eric in outrageous positions on the exercise machine, blowing and screwing each other until the love juices flow.

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[See picture magazine Magnum Griffin 3: Bench Press.]

[A Manshots article placed the release at about 1977.]