Bullshit, you've called out of work for stomachaches before. [Along with a myriad of other implausible excuses, but that doesn't change the fact that they can feel sick. From time to time. Papyrus narrows his eye sockets, crossing his arms as he continues to study Sans's annoying smirk.] Maybe it's not acid, but we worried about batteries for reasons. It's observation time, Sans. [Papyrus isn't conceding this until he can't think of excuses.]