Rule 34 Dev - abs anthro anus armpit_hair balls big_balls big_butt big_penis bodily_fluids body_hair butt clothing erection footwear footwear_only genitals hands_behind_head handwear huge_balls huge_penis humanoid_genitalia humanoid_penis looking_at_viewer male mostly_nude muscular muscular_anthro muscular_male musk nipples open_mouth pecs penis presenting presenting_armpit presenting_hindquarters pubes scent shoes shoes_only simple_background smile smirk solo sweat sweatdrop sweaty_armpit sweaty_balls sweaty_butt sweaty_genitalia tail thick_thighs vein veiny_penis lumarten sega sonic_the_hedgehog_(series) knuckles_the_echidna echidna mammal monotreme absurd_res digital_media_(artwork) hi_res|21985378940