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all_fours animated animated_gif anthro arm_tuft balls butt clothed clothing dragonbooper ears_back erection genitals knot knotted_penis leg_tuft legwear looking_back machine male monochrome partially_clothed penetrable_sex_toy penetration penis pivoted_ears protogen raised_tail rear_view sex_toy sex_toy_insertion short_playtime shoulder_tuft simple_background solo stockings tail thigh_tuft tuft