Board Thread:General Discussion/@comment-26006155-20181123023529/@comment-26006155-20181213123619

Finally, I found the clip where Sans teleports right in front of your face in the Genocide ending: https://youtu.be/L-tAQHP_zCU?t=3892

The sound and momentary blackout are an exact match to Frisk teleporting in the "Warioware" part of the Sans fight