The story
Likely from ball in the sense of a dance.
Etymology from Wiktionary, CC BY-SA 4.0.
have a ball
Today it means: To enjoy oneself thoroughly; to have lots of fun or excitement. Full definition →
Today it means: To enjoy oneself thoroughly; to have lots of fun or excitement. Full definition →
Likely from ball in the sense of a dance.
Etymology from Wiktionary, CC BY-SA 4.0.