Sempiternal Fangirl means: A girl aged between 11-14 years old who says she is a ‘fan of Bring Me The Horizon’. In reality, the only album they have listened to and like is 2013’s Album Sempiternal. If you mention the past albums when Deathcore was created, such as This is What the Edge Of Your Seat Was Made for 2004, Count Your Blessings (2006) and Suicide Season 2008, they will be confused. Avoid approaching them. (in Community Dictionary, added by Tori Gay)