I'm an old hand at getting the old urge relieved on a daily, sometimes hourly rate. The best wank I've ever had was with one of those nylon sponge things you use in the shower or bath to soap yourself down with. This one had a rope on it to hang up.
I placed the loop of the rope handle over my dick, and placed the spongy part down between my butt - sort of wrapped around downwards. This enabled me to clench my arse and increase the tension or pull factor on the base of my dick.
This made gave my dick an extra inch or so in length, and the end of my circumcised knob grew to about twice its usual size - what a sight!!
Needless to say, I had the hardest, most ferocious orgasm ever - spraying cum right up the shower wall to well past my head!!
Must try it!!