You kind of got turned into an amalgamate. Accidentally. You were messing with Alphys' stuff a little because she told you to make sure no one else enters... And well, now you're an amalgam. And a HUMAN amalgam... So when Alphys arrives, she finds you in this melting form. She saw you were a bit hostile, so she had no choice other than keep you in the true lab like other amalgams. So you enter the true lab, but before you can go bacl into the elevator, Alphys closes it, as she goes back to her lab. So now what? Now you're stuck here. You go and explore the true lab, and you find yourself with... Five more amalgamates!?

MemoryHead: "Oh... H3y, n£w guy..."

Crystal: "Sno......... Wy...."

Endogeny was shaking, which was normal for it

Lemon Bread: "Huh? A hum4n am4lgam@te?"

Reaper Bird: "We11, th4t's new!"