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16:10 anal anal_penetration anthro balls black_hair canid canine crisstail duo erection eyewear felid foreskin fur genitals glasses hair humanoid_genitalia humanoid_penis interspecies looking_pleasured male male/male mammal masturbation nude partially_retracted_foreskin paws penetration penis purple_body purple_fur red_body red_fur simple_background sitting widescreen