5 knuckle chuckle

Masturbation, masturbating, masturbate...
In my native language, "punheta".

Mine is unique because I made it up. I call it "smacking it" or "smack it".

Jerkoff

Wanking and Stroking and some Jerking off.

Stroking or Shining the pole..

Milking my cock.

I usually say masturbating because it sounds so nasty as it is. But, for guys, I often call it "creaming off."

Flogging the dolphin.

Always used Jackin

My jo buds and I say we're "Playing Solitaire".
If we say "Playing Solitaire On The Computer", it means watching porn and jacking.
I have also said these to callers that are unaware of my jo habits. Some one calls and says, "What're you doing" and you answer "I'm Just Playing Solitaire On The Computer", they have no clue what you're really doing.

Some of these are great!

Here is a list from "The Penis Book"
by Joseph Cohen ...

"It Feels Great: Masturbation
No Matter How You Say It ... "

Beating off
Beating the bishop
Boppin' the bologna
Burping the worm
Calling down for more mayo
Choke your chicken
Clean the pipes
Cracking the fat
Dropping a line
Dropping stomach pancakes
Fist fuck
Fisting the mister
Five knuckle olympics
Flogging your log
Flute solo
Giving it a tug
Giving the John Hancock
Hacking the hog
Holding the sausage hostage
Hone your bone
Jack off
Jackin' the beanstalk
Jerk off
Jerkin' the gherkin
Knuckle shuffle on your piss pump
Making the bald guy puke
Manual override
Milking the lizard
Moulding hot plastic
Oiling the pogo stick
One handed clapping
Paddle the pickle
Peel the banana
Playing with your noodle
Playing the organ
Play the piss pipe
Polish the chrome dome
Popping the porpoise
Pound your piss pump
Pounding your pud
Pumping the python
Punchin' the munchkin
Roughing up the suspect
Rounding up the tadpoles
Rub one out
Seasonin' your meat
Self love
Shaking hand with the governor
Shining the helmet
Shooting putty at the moon
Slap the salami
Slappin' pappy
Sloppy Joe's last stand
Sloppy sign language
Spank the frank
Squeeze the cream from the flesh Twinkie
Squeezing the toothpaste
Tease the weasel
The sticky page rhumba
Tickle the Elmo
Tussle your muscle
Unwrapping the pepperoni
Wax your Jackson
Whack off
Whipping the window washer
White water wristing
Winding the jack-in-the-box
Wonking your corker
Working a cramp out of your muscle
Working your willy
Wrestling the eel
Yank my doodle
Yank your crank

beat off or blow a load

"Masturbating" is more or less urbane, while "jacking off" is vulgar. I use whichever strikes my mood.

Lmao