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8.
when you are in the climax of wanking knowing that someone is coming, in wich case you begin to wank so fast you could satisfy a female blue whale
when ur mum is on her way up the stairs
by Tony bistol February 23, 2005
 
1.
To pull over and masturbate when driving long distances. Much like the advised "power nap" to avoid accidents.
"Man, ive got one hell of a boner, better pull over and power wank."

http://www.youtube.com/watch?v=6hTWzmxSJQ8
by Baxt August 27, 2008
 
2.
To 'beat the meat' within seconds of ejaculation, then stopping. Enjoy the feeling for a while. Wait for the feeling to stop, then beat until you are within seconds of blowing again. Repeat for a good few hours, then while you do finally blow your load, it will feel a million times better than any wank, blowjob, fuck or sheep shagging.

Well recommended.
*ring ring*

Man 1: Hello?

Man 2: Alright dude?

Man 1: Fuck off, I'm having a wank.

Man 2: Fair play, I'll call you back in 5 then?

Man 1: No. I'm having a power wank...

Man 2: A who wank?

Man 1: *sigh* Just call me back in 3 hours.

Man 2: 3 HOURS?!

*Dial Tone*
by Looney... February 13, 2010
 
3.
To stand in front of a full size mirror, only wearing a viking helmet and 'wank' solidly for 10 minutes while listening to 'The Ride Of The Valkyries' (the one from Apocalypse Now)
Person A - "I had an awsome power wank last night"
Person B - "Wierdo"
by Jonnie66 August 16, 2006
 
4.
The act of commiting 'self abuse' over a number of hours. Possibly whilst watching an arty French flick on a lonsome Friday night while futily tugging on ones flacid penis for three hours waiting for the leading lady to get her little bra-less French tits out.
"Fuck me, the wee man's in tatters! I had a three hour Powerwank last night."
"Over that French flick?"
"Aye"
"T'was shite, she never got her tits out."
by Rory 'Sunday' Bulloch November 10, 2005
 
5.
In the case of extreme horniness and unable to find the proper equipment (magazines,internet,movies etc)and you are in a public place (school,work etc). A power-wank is the answer. Max time 30 seconds. You go into that loo and bash at your member so hard your hand almost falls off.

Can be used in competition: who can wank the quickest. Wud only advise if reali drunk or you dont mind group masturbation
"Joe you were quick in the loo?"
"oh thx just went for a power-wank to clean the pipes"

"go"
"go"
"go"
"WHEY"
by Billy Sastard August 12, 2007
 
6.
The act of wanking to ultimate pleasure. This is done by assembling 3 computer screens side by side, putting porn on all 3 of them and then blasting your stereo with dubstep so you can't hear anything else. Proceed.
Jesse was feeling a little depressed with life so he busted out a power wank to lift his spirits.
by colourize June 29, 2011
 
7.
The act of masturbating whilst inserting something into one's own anus, typically a finger or toothbrush. Known to "power up" a good wank.
1)I had an awesome power wank last night.

2)Q: What's Ed doing?
A: He's powering it up in his room.
by poweritup108 October 13, 2005