This is the second time in about a month that Mettaton has found himself idly observing someone's "ass", though it begs the question if skeletons even have them. Do they? They just have a pelvis and the lower part of a spine, right? So that doesn't count. Maybe "backside" is a better way to frame it.

Then again, magic seems to fill up a lot of Sans's clothes, seeing as he's chubby and round all of the time. And he did have to account for this magical measurements when he made the hoodie. Hm. Skeletons are weird.

His eyes meet Sans and he shows no embarrassment on the off-chance that Sans noticed him staring at his "backside".

"All the same, it is appreciated."

Mini, after their few moments rest, gets up and wheels themself over to Bun, beeping gently to check on them. Mettaton gives the bot and the rabbit a fond look. He continues looking at them as he asks his next question.

"So you know Morse code and binary? What an interesting mixture of talents! Where did you learn how to do that?"

He frames his question in an easy tone. No need to be accusatory or blunt. After all, it's mostly small talk he's making and Sans will be leaving soon. He thinks.