Meaning Boss is listening
Type Acronym
Rank ★ ★ ☆  Average
Usage Online Only (chat, messaging, e-mail)
Comments Lets chat recipient know that sender's boss is listening or watching the chat session.
Example "BIL right now!"
Updated May 16, 2017
Meaning Brother-in-law
Type Acronym
Rank ★ ☆ ☆  Uncommon
Usage General (not just online)
Comments Refers to a spouse's brother.
Example "I get along with my BIL pretty well."
Updated April 11, 2018