If Twilight Sparkle was Cave Johnson ~
Also casual happy bg music to this insanity ;;

Comic: "My Little Test Subjects" by pony-beserker
http://pony-berserker.deviantart.com/art/My-Little-Test-Subjects-359801351

I've wanted to dub this for such a long time because it was so funnyy (also the reference to Portal which is awesome in itself) ;; check out the artist's other comic works on his dA!