Green’s Dictionary of Slang

cluckhead n.¹

a fool.

1960, 1975		Wentworth & Flexner DAS.
1999		‘Ask E Jean’ at Elle Nov. 🌐 I beg your pardon, but you’re engaged to a giddy little cluckhead.
2000		posting at nwtekno.org 19 Sept. 🌐 Some cluckhead decides to steal a truck. Owner of truck wakes up seeing some cluckhead breaking into his truck. The cluckhead starts driving off with dudes truck.