Aw, geez. It's honestly sort of just sad to watch at this point, and that lingering good will is most of what gets Sans moving, even if it's at a leisurely pace. He yawns, and then wanders over in their direction.

Now, normally his voice is kind of a problem for blending in as a kid, but in this scenario he just decides to roll with it. Hell, he'll make it worse, just for the extra confusion. Just really let the accent out.

"'Ey, mom, there you are," he says, sounding very much like an adult man. "You ladies done here? I'm hungry and my mom still owes me a hot dog."