1 definition by Admoka

Top Definition
When a rubber band (or other material that can bind) is wrapped around the penis so that blood cannot flow. This will cause the penis to become enlarged, purple, and the head will be the tip of the "arrow".
Eric was dissapointed with Gareth's small penis, so he wrapped a rubber band around it to make it bigger, causing the Purple Arrow effect.
by Admoka October 11, 2009

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