Green’s Dictionary of Slang

1. stupid.

1968		F. Exley Fan’s Notes 343: ‘Why, Exley, you dip-shitty old bastard — I thought you'd be dead’ .
1974		Eble Campus Sl. Mar. 2: dip-shit or dip-shitty – insignificant, petty, trivial.
1977		(con. 1969) M. Herr Dispatches 26: Honest to Christ, he was about the biggest dipshit fool of all time.
1981		W. Boyd ‘On the Yankee Station’ in On the Yankee Station (1982) 119: You’re fuckin finished you fuckin dipshit asshole!
1992		R. Marcinko Rogue Warrior (1993) 282: General, it’s all a bunch of goddamn dip-shit numb-nuts.
2001		(con. 1964–8) J. Ellroy Cold Six Thousand 49: Pete smiled. Pete rolled his eyes. Pete goofed on dipshit Moore.
2009		IOL News (Western Cape) 12 Nov. 🌐 Tim Bresnan [...] Graeme Swann, also known as the dips**t twins.
2013		T. Piccirilli Last Whisper in the Dark 307: They weren’t going to make such a dipshit mistake.
2020		W. Boyd Trio 85: How had she ever come to marry this man, this mild dipshit maniac? she asked herself for the thousandth time.
2023		(con. 1962) J. Ellroy Enchanters 14: It fritzed up the line feed and made dipshit Lawford eeeeek.

2. second-rate, inferior.

1976		R. Price Blood Brothers 18: He got into this dipshit school in Louisiana.
2010		J. Ellroy Hilliker Curse 5: The Season of My Discombobulation [...] the Withering Winter of My Dipshit Discontent.
2015		S. King Finders Keepers (2016) 39: Acting in a dipshit play no one would ever pay to see.