That's John Holmes blasting Seka and Kandi Barbour's slut faces. Seka's a nighthag bitter about her porn career and Kandi died a homeless lunatic in Sod Francisco.
John Holmes is a stunt cock in this video. You never see a full shot of Horner fucking these sluts. If you look carefully you'll see Horner has hairy wrist/forearm, while any close up shots show a cleaner looking wrist.