Term used by UO guild Evil Bastages in the 1990’s to express hatred/worthlessness to another player. Many other guilds followed throughout the years.
The term originally came about when a player was trapped in a temporary wall as he/she was burning. Evil Bastage member told him/her to die in a fire as he/she burned. It stuck from that point forward.
Person: Why did you kill and loot my body?
Evil Bastage: Die in a fire