Green’s Dictionary of Slang

dildock n.

also dilldock
[derog. implications of SE dildo]

(US) a fool.

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].
[US]J. Archibald ‘State Penmanship’ Popular Detective Jan. 🌐 ‘How such a dopey Dilldock could dope out all that,’ the brunette secretary began.
[US] oral testimony in Lighter HDAS I.
[US]United Nations Invasion Tracking at krug.org 8 Sept. 🌐 I says to Sven ‘Hey geez, wheredya go then, ya dildock? Gimme my beer!’.
ourtownnews.com 4 Jan. 🌐 Another fine mess you’ve gotten me into, you dildock.