Fanfiction based entirely around the youtubers danisnotonfire and amazingphil. Yes they do know about it, and Dan apparently finds it hilarious and harmless...
Jenny- "So what are you up to?"
Laura- "Oh, just reading some phanfiction where Dan gets hit by a bus and loses his memory, so Phil has to help him get it back."
Jenny- "OMG FEELS!"
The meaning of natorious phanfictions is the collective of a group of -story's- backing themselves around the lives of YouTube personalities Dan Howell (Danisnotonfire) and PHIL Lester (AmazingPhil).
This collection is vast but a few of these Phanfics are: