Etymology

full of beans

Today it means: Energetic and enthusiastic. Full definition →

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full of beans · adjective1

Attested since the 1840s. Possibly a reference to coffee beans. Attributed to Robert Strang.

full of beans · adjective2

Attested since the 1930s. A euphemistic form of full of shit.

Etymology from Wiktionary, CC BY-SA 4.0.