Stephens Agency promo:

This all-action movie begins with Greg and Jerry on a visit to the West Coast, waking up in their hotel room and balling. Then, out for the day and a visit to a young groovy photographer. Soon pictures are forgotten for a three-way that begins in the pool, continues in the living room and on the stairs, and ends in the bedroom. Three handsome blonds get it on and demonstrate that the three B's stand for Hot, Horny and Hung.

See picture magazine Hombre.