Rule 34 Dev - 2015 2boys abs absurd_res anal anal_penetration anthro anthro/anthro anthro_only ass bent_over bird's-eye_view birds_eye_view bottomless butt_grab cervine clothed clothing computer deer duo equine erection eyewear from_behind fur furry glasses grin half-dressed hand_on_butt high-angle_view high_res indoors keyboard looking_back lying male male/male male_anthro male_only mammal multiple_boys muscle nipples nude penetration penis penis_in_ass sex sigma_(character) sigma_x standing story_in_description stripes stripes_(character) teacher twink yaoi zebra|583507