Top Definition
To have a seriosly bad wank when your not feeling to healthy.
Ill Guy: Dude, i had a willk last night, while still in the midst of my man-flu. Took me about 3 hours to hit it.

Healthy guy: i hoped u cleaned up well, i mean, that ill man-juice could kill.
by lewB November 29, 2007
5 Words related to willk

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