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1:1 2d_animation animated animated_gif anthro clothed clothing digitigrade dinosaur duo erection erection_under_clothing foreskin frame_by_frame frottage frottage_through_clothing gallimimus genitals glans greyscale grinding handjob humanoid_genitalia humanoid_penis klongi long_neck loop lying male male/male monochrome on_back ornithomimid ornithomimosaur penile penis penises_touching prehistoric_species reptile retracting_foreskin saurischian scalie sex short_playtime straddling tail text theropod thick_tail tongue tongue_out url