Green’s Dictionary of Slang

flip off v.1

[ext. flip v.2 (1)]

vi. vtr., to masturbate.

1972
198019902000
2002
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[US]B. Rodgers Queens’ Vernacular 115: to masturbate [...] flip it [around, off].
[Aus]P. Radley My Blue-Checker Corker 54: ‘Get lost, Duck! Go flip your dirty big black retriever off.’ Duck did that sometimes.
[Aus]‘Thommo’ Dict. Aus. Swearing & Sex Sayings n.p.: FLIP OFF — Male masturbation, very casual, almost a waste of time.
‘Animal Farm’ at GalleryListing.com 🌐 I’ll bet he’s still flipping himself off! Not that there’s anything wrong with masturbation, of course. It’s just better to have a partner now and then.

In phrases

flip oneself off (v.)

(Aus.) to masturbate.

1955
19601970198019902000
2002
Show quotations
[Aus]‘No. 35’ Argot in G. Simes DAUS (1993).
[Aus]G.A. Wilkes Dict. Aus. Colloquialisms.
‘Animal Farm’ at GalleryListing.com 🌐 I’ll bet he’s still flipping himself off! Not that there’s anything wrong with masturbation, of course. It’s just better to have a partner now and then.