Rule 34 Dev - 2boys anthro balls clothing cursor duo echidna erection fellatio first_person_view gloves human knuckles_the_echidna licking looking_at_viewer magzol male male_only male_pov mammal monochrome monotreme oral penis penis_lick pov pov_eye_contact sex simple_background size_difference sketch sonic_(series) sucking tongue tongue_out yaoi|3459250744