Green’s Dictionary of Slang

a non-specific insult, usu. aimed at a short person.

1922		‘J.H. Ross’ Mint (1955) 108: Look me in the face, you short-arsed little fuck-pig.
1972		Galton & Simpson ‘Loathe Story’ Steptoe and Son [TV script] Silly short-arsed git.
1983		A. Payne ‘Get Daley!’ Minder [TV script] 61: Albert Wendell. Twenty stone of short-arsed nastiness.
1992		Barbara Anderson Portrait Artist’s Wife 247: Jason, a short-arsed barrel-chested model.
1999		R.G. Barrett Wind & Monkey (2013) [ebook] ‘I’ll see you and your short-arsed little mate out in the car park’.
2000		N. Griffiths Grits 97: A looked over at the bar like an saw iss fuckin short-arsed twat in a blew jumper.
2001		Sydney Morn. Herald 27 Feb. 8/5: Then emerged a ‘little short-arsed fellow’.
2024		J. Meades Empty Wigs (t/s) 147: Welsh, with its distressing connotation of furtive, racially impoverished, short-arsed Celts.