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Undertale Drabble Series

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Oh Stars Paps was really going at it. Sans felt filled to bursting. His bro was so cool but his heats were a bit to much! They’ve been having sex for hours, Sans couldn’t even lift his head anymore. Hell he couldn’t even feel his body, just his sore pussy, round aching stomach and Papyrus’s dick plowing into him, barely stopping even when he came inside. Eye lights rolled toward the ceiling, Sans reached down to hold his sloshing stomach to ease some of the pressure. Soulings weren't even made this way but considering how full of his brother’s magic he was he wouldn’t be surprised if Papyrus actually bred him.