It can also stand for decibels relative to full scale but who gives a shit?
Person 2: dbfs?
DBFS is often preceded by a hashtag (regardless of medium): #dbfs
Liz: It's Sunday, we're watching "Game of Thrones." DBFS!
Allison: I haven't started watching it. What is it about?
Liz: Winter is coming. Just watch it. DBFS!