Top Definition
The region of hair in between your balls and asshole. To develop a tainthawk all other hair on testicles and testicle area as well as most of exposed asshole hair which varies from person to person must be removed. Resulting in an upside down mo-hawk in the taint area only. Hence tainthawk
Wow Billy......you have an impresive tainthawk.

Billy responds: Why thank you.
by CQDog December 05, 2008

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