While you were walking around Waterfall, you saw Sans in another stand so you when up to talk to him.

"What? Haven't you seen a guy with two jobs before? Fortunately, two jobs means twice as many legally-required breaks. I'm going to Grillby's. Wanna come?"

You agree and take Sans's offer. You could use a break after all that has happened. Sans walks out of his stall, the subtle noise of water falling can be heard as well as the twinkling of the fake stars.

"Well, if you insist... I'll pry myself away from my work... Over here. I know a shortcut."

When you followed Sans, the next area you entered was.. Grillby's? Weren't you just in Waterfall. Whatever, it doesn't matter.

"Fast shortcut, huh? Hey, everyone." Sans greets the monsters currently residing in the bar. Seems like he's popular.

"Hey kid, get comfy." He sits on the stool, waiting for you to do the same but... the only problem is that you're too short to reach it and when Sans offered help, you declined.

"Uh... kid? You sure you don't need any help?"