Okay, okay, making people cry is like the opposite of what Sans wants to do with his teasing. Angus seems a little sensitive, so before he actually replies (which he'll do seriously this time), he must offer Important Advice:

"Kiddo, if someone's bugging you, you've gotta say so. I'm a boneheaded guy, y'know. Skull's pretty thick. No big deal if you've gotta knock some sense into me."

You're supposed to just yell at him to be serious, not actually get upset! But anyway.

"Unless these can get moved around, it's gonna depend on who put them here, yeah? If that language reads in a different order, we should be reading them that way. Like maybe it starts with the woman and the monster, then the monster with the book, then the woman in the thorns. But if you can just pull these out and swap 'em, maybe these two go together."

Sans points to the two with the woman in them.