Either you're actually very hungry, in which case, go eat something, or you were thinking of the terrifying cartoon "game" in which a pumpkin walks into a restaurant and demands food before proceeding to destroy the fabric of his reality.
I don't buy the schmegegge about Morty sleeping with Moira.
His version of the story was pure schmegegge.
The whole schmegegge was made up to get Liz a little bit of attention.
Looking or experiencing something nice after witnessing something horrid like a disgusting gif or a disturbing video. Typically used as eye bleach are nice images of whatever makes the disturbed person happy.