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It is when a man has a hard on and he squeezes his dick near the base, causing a build up of blood in the penis, giving it a purple appearance and causing it to increase in size.
Yesterday I got hard and squeezed the base and was all like ''Fuck yeah! I'm the purple hulk!''
by the doctor of the road June 08, 2009

Words related to purple hulk

blood cock dick hard on hulk penis stiffy