gelbooruhttps://xbooru.com/index.php?page=atom&tags=2020s 2022 2boys 2d 2d (artwork) abosinsin animated skeleton bad id bad twitter id big dom big dom small sub bigger dom bigger dom smaller sub bigger male bigger penetrating bigger penetrating smaller blue blush blue penis blush bottom sans commission art dialogue digital media (artwork) duo ectopenis ectoplasm edging english text face grab gaster gaster (undertale) gay gay sex grabbing face grabbing penis holding face larger penetrating male male/male male only male penetrated male penetrating male penetrating male monster orgasm denial partially colored penetration penis penis grab purple blush purple penis sans sans (undertale) sanster seme gaster sitting skeleton small sub small sub big dom smaller male smaller penetrated smaller sub smaller sub bigger dom text third-party source top gaster twitter username uke sans undead undertale undertale (series) video games white background yaoi2024-05-16T09:40:15Zgelbooru