The act of spinning one's penis around in the fashion of a windmill, usually with the intent of hitting someone in the face. Sometimes done while urinating.

Spinning your arms to hit someone with intent to injure.

clutching ones flacid penis at the base, and waving it in a similar motion to that of a windmill

Verb; To whirl one's outstretched arms around in a circular motion, fists clenched, with the intention of hitting something (or someone). This action resembles the spinning blades of a windmill.

Often used in conversation to demonstrate an anger towards a specific subject or entity.

The act of your ridiculously large rims spining