Oh boy, let Mettaton in there. He loves fireworks and confetti!!

See, the blushing only eggs Mettaton on more, and he moves his fingers to Papyrus's shoulder personably.

"I could just look at you all day, you're so adorable!!" he adds, before finally deciding to cut his little game short. He's had his fun, they were here for something, right? Right! "But anyway!! Let's see what I can make of this!"

Pulling away from Papyrus, he instead turns his attention to the display of yogurt, picking a pair of large containers up. Yes, these would do nicely for flavor and coloration~