a popular meme in the movie Diary of a Wimpy Kid: The Long Haul where the main character Greg accidentally picks up a diaper and it gets stuck on his hand, and he keeps shouting "It's a Diaper!" while a lot of people were recording a video of him, eventually he went uncontrollably viral.
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.