One of Daniel Howell's (danisnotonfire) most well know "in" jokes with his Danosaurs (viewers/audience).
During one of his liveshows during the tradition of asking his Danosaur's how they are doing, many often say Placenta.
Dan: "Hey guys! How are we doing today?"
Dan: Fan1, placenta is not an emotion...
Dan: GUYS! (Does that incredibly cute laugh of his...)
When making Christmas cookies with his BFF and flatmate (AND BOYFRIEND) Phil...
Dan: Can you guess what this one is?
Phil: Urmm what is it?
Dan: It's a PLACENTA COOKIE!!!