Green’s Dictionary of Slang

fight n.

also riot
[abbr. bunfight under bun n.3 ]

(US) a party, a brawl.

[UK]Farmer & Henley Sl. and Its Analogues.
[US]‘Hugh McHugh’ John Henry 87: One night recently I went out with Clara Jane to one of those progressive euchre fights.
[US]‘Hugh McHugh’ You Should Worry cap. 10: Say! did you ever stray away from home of an evening and go to one of those parlor riots?
[US]Wood & Goddard Dict. Amer. Sl.
[US]R. Starnes Another Mug for the Bier 18: The little girl had been a familiar figure at [...] the cocktail fights frequented by the old man.