Rule 34 Dev - 1:1 1:1_aspect_ratio 1boy 2d 2d_(artwork) animated_skeleton balls blue_blush blue_hoodie blue_jacket blue_penis blue_testicles blush bottomless bottomless_male clothed comic_sans digital_media_(artwork) ectopenis ectoplasm english_text fallen_ghost_angel_(artist) genitals glowing glowing_genitalia glowing_penis grabbing_own_penis hi_res high_res high_resolution hires hooded_jacket hoodie jacket looking_at_genitalia looking_at_own_penis looking_at_penis looking_down lying_on_back male male_masturbation male_only masturbation monster monster_boy on_back penile_masturbation penis pillow precum sans sans_(undertale) skeleton socks solo_male speech_bubble sweat talking_to_self testicles text twitter undead undertale undertale_(series) video_game_character video_games|1025779