When you measure the length of your wank stroke and multiply this by the average strokes per masterbation session. This gives you the total distance you have to rub over you dick to achieve a hot steamy creamy ejaculation.

Note: Derived from wind-run which is the average distance meteorologists measure the length gusts of wind blow over.
While using the hot-shots radar gun and pretending to wank, the scatman recorded a velocity of 3 m/s. Therefore, multiplying this by an average wank time of 30 minutes, or 1800 seconds gives a wank-run of 5400 m. A pretty impressive wank-run compared to my premature ejaculation which gives my only a wank run of 20 metres.
by Kbud October 26, 2007
Get the wank-run mug.
Similar to a ding-dong-ditch, it is the act of jacking off until you are about to cum, knocking on someone's window until they open the blinds, and then busting all over the glass. After you've finished you have to pull up your pants and run away
Those goddamn kid keeping doing wank and runs to our house, this is the third time this week I've had to go to the store for windex!
by CUSTOMBRO420 May 21, 2017
Get the wank and run mug.