When the day feels like the air is pure mucus, your brain doesnt function normally and you look like you've just got out of coma in a wolf cave, the public's eyesight should be spared from how dreadful you look and it means you're well overdue for a BFDON (big fat day of nothing). My BFDON morphed into BFDONETWSOTAH (big fat day of nothing except taking weird snapshots of things at home). Ahh boredom is pure bliss.
