Mope Mope Effect

The effect where something pretends to be calm, cute, cheerful, etc. then slowly/quickly contrasts into dark themes like violence, gore, blood, etc.

"Oh wow these flowers look cute- OH GOD WHY DO THEY HAVE MOUTHS WITH THOUSANDS OF TEETH NOW"

"WHAT IS GOING ON HOLY FUCK"

"That's Mope Mope effect my dude"