Xbooru - 2010s 2016 2boys 2d 2d (artwork) against the wall against wall anal animated skeleton ass big dom big dom small sub bigger dom bigger dom smaller sub bigger penetrating bigger penetrating smaller blue blush blue cum blue hoodie blue jacket blue penis blush bodyguard position bottom sans brother/brother brother and brother brother penetrating brother brothers butt clothed clothed sex comic sans cum cum on wall cum while penetrated digital media (artwork) dirty talk duo ectopenis ectotongue english text fontcest from behind from behind position fully clothed gay gay sex gloves grabbing penis handjob handjob while penetrating hoodie incest jacket larger penetrating larger penetrating smaller licking licking face male male/male male penetrated male penetrating male penetrating male mmmemmo onomatopoeia orange blush orange penis orange tongue papyrus papyrus (undertale) papysans penetration penetration from behind penetration through clothes penis penis in anus penis in ass penis through clothing red gloves sans sans (undertale) seme papyrus sex sex from behind sex through clothes sex through clothing skeleton small sub small sub big dom smaller penetrated smaller sub smaller sub bigger dom standing sex talking to another talking to partner text text bubble thrusting thrusting into ass tongue top papyrus uke sans undead undertale undertale (series) video game character video games yaoi