Green’s Dictionary of Slang

(US) a fool.

1919		Lincoln Co. C 56: Dilldock Easley came back and was given the job again. However, Dilldock’s inability to express himself clearly regarding orders to the company resulted in a great many ludicrous situations [HDAS].
1949		J. Archibald ‘State Penmanship’ Popular Detective Jan. 🌐 ‘How such a dopey Dilldock could dope out all that,’ the brunette secretary began.
1971, 1993		oral testimony in Lighter HDAS I.
1998		United Nations Invasion Tracking at krug.org 8 Sept. 🌐 I says to Sven ‘Hey geez, wheredya go then, ya dildock? Gimme my beer!’.
2001		ourtownnews.com 4 Jan. 🌐 Another fine mess you’ve gotten me into, you dildock.