Boy back fist too much.
Yuh love back fist too much daaagggg....
by Chad The Great November 21, 2016
Get the back fist mug.
(Vulgar) Jamaican slang
Refers to the act of pulling the penis back and forth with the hand in the shape of a fist, usually till ejaculation occurs.

To masturbate or jerk off
Everyday, a big man like you just stays at your yard, backing your fist. Waste man style that, dawg!
by Tropical Rythms August 2, 2020
Get the Backing your fist mug.
The jamaican term for masturbating.

Comes from the action made when doing so (the back and forth action of your fist)
*watching some porn*
"i think i jus goin go back my fist now"

"Dawg, mi a go home and back mi fist"
"YUTE! You need a girl!"
by BobbySox June 19, 2009
Get the Back my fist mug.