Green’s Dictionary of Slang

piss off! excl.

[piss off v. (1)]

an excl. of rejection, dismissal.

[UK]J. Franklyn This Gutter Life 178: A knot of cheap prostitutes standing before the Pavilion Theatre was dispersed by the showily-dressed bullies who lived on them. ‘Go on! Go on! p**s off! Don’t stand there chewin’ the rag! hustle, you bloody bitches, will you?’.
[UK]K. Waterhouse Billy Liar (1962) 52: ‘Piss off,’ I said.
[UK]K. Waterhouse Jubb (1966) 107: You can follow me all afternoon [...] Otherwise [...] piss off.
[Aus]A. Buzo Rooted II iii: Piss off.
[Aus]D. Ireland Glass Canoe (1982) 91: ‘Piss off, Sibley,’ said the Great Lover.
[Aus]M. Bail Homesickness (1999) 181: You piss off!
[UK](con. 1918) P. Barker Eye in the Door 129: Piss off.
[UK]D. Mitchell Black Swan Green 281: The gypsy kid sat under the cedar sending out piss off waves.
[Aus]L. Redhead Cherry Pie [ebook] I was going to tell him to piss off.
C. Hammer Scrublands [ebook] ‘Goodo. Piss off then!’.