FURVERT!

after_sex anthro anus backsack balls bodily_fluids butt cum cum_in_ass cum_inside echidna foreskin genital_fluids genitals knuckles_the_echidna leaking looking_at_viewer looking_back male mammal maychin monotreme nude open_mouth partially_retracted_foreskin penis presenting presenting_hindquarters raised_tail sega simple_background smile solo sonic_the_hedgehog_(series)spread_legs spreading tail tongue