Top definition
Term originated in Northern England used to describe a shrunken, flacid penis due to taking ecstasy or other amphetamines. Usually only lasts while user is under the influence of the substance taken, and usually goes away once the penis is stimulated.
Once she had turned me on the speed willy subsided and my johnson was back to normal size.
by xKILOx November 20, 2005
Get the mug
Get a speed willy mug for your Aunt Sarah.