fist, v. — Green’s Dictionary of Slang

fist v.

to masturbate onself or another.

1971		‘B. Cochran’ Crotch Bait 119: Bob reached around and fisted Dan’s pulsing prick [Simes:DLSS].
1985		R. Winter Surfer Sex 51: He was fisting his broad cockshaft [Simes:DLSS].
1996		S. O’Hara Do-It-Yourself Piston Polishing 32: I reached down to fist Pedro’s dick [Simes:DLSS].
2006		www.advancedmasturbation.com 23 Oct. 🌐 I decided to give myself a little jacking off and see if he would join in, so I started to fist my hot hard 8 penis [Simes:DLSS].

In phrases

fist in (v.)

to interrupt.

1997

N. Barlay Curvy Lovebox 73: He starts awkwardly pro’ly expectin’ Nood to fist in.

fist it (v.)

1. of a woman, to caress a man’s penis.

1890–1904

Farmer & Henley Sl. and Its Analogues.

2. (Aus./N.Z.) to eat with one’s hands.

1846		C.P. Hodgson Reminiscences of Aus. 29: Some prefer a plate and knife and fork [...] others [...] seizing the lump of beef in one hand and the damper in the other, ‘fist it’.
1885		Bulletin (Sydney) 4 July 10/2: We loved her in our heart of hearts – ’Tis a heart that ’twas always unruly / The quicker she ‘fisted’ the tarts. / We could not of her hand be a holder [...] / For ‘wolfing’ she wanted them both.

fist one’s mister (v.)

to masturbate.

2001

Mynx mynx.com 2 Aug. 🌐 When Dear Mynx first started, it was supposed to be a somewhat lighthearted forum for Quake advice. I came up with Mynxisms like ‘fist the mister’ and ‘wonk the conker’ because I wasn’t sure I should say something like ‘jerk off’ on PQ when people started turning to me for help on eyebrow raising subjects.

see fist-fuck v.