You are young Asgore. You, Rudolph, Carol, and Toriel are sitting in class when Toriel begins mocking Carol

Carol: well, well, well. If it isn't the school failure. You finally crawled out of whatever dumpster you were in and graced us all with your presence.

Toriel sinks further into her desk trying not to make eye contact

Toriel: Stop it...

Carol: why should I? You're just an ugly loser, you'll probably end up as a bitter single loser with a crappy job.

You finally have enough and go up and kiss Toriel