BRAWL is a rough or noisy fight or quarrel.
Air France suspended two pilots who started a BRAWL in the cockpit of Airbus A320 in June 2021 during a flight from Geneva to Paris.
The fight ensued after the copilot refused to comply with certain instructions, and was grabbed by the collar and possibly slapped by the captain. The fight was resolved after a flight attendant intervened and separated the pilots.