Extreme Wanking 

This is when you masturbate in an unusual way.
You could be upside down at the time, using two elbows, your feet, sports equipment or rolling pins.
The purpose of extreme wanking is to spice up your wank life

Extreme Wanking example

The Andre Agassi : Double back hander

1. Assume a seated position
2. Point your legs to the heavens.
3. Put your hands underneath your legs.
4. Put both hands around your penis.
5. Enjoy!

Extreme Wanking by G-spot and McScrote May 25, 2007

extreme wanking 

The art of masturbating till near climax. Whereabouts you shout: "Hey mum come here a minute!". You then have the time it take till you mum arrives to finish jacking off and get cleaned up.

extreme wanking by Alex and Rob February 18, 2003

extreme street walking 

A combination of flips and grinds using your feet and not a skateboard or bike. Mainly performed by experts. Not reccomended for novices, try skateboarding first(unless you are a complete idiot like we are you duck butter drinker).

Yo...We are going extreme street walking after school. We don't have our camera man so we need you to come. Make sure to bring your awesome off the shiznit shoes. Ya

extreme street walking by Speder May 15, 2005