noun: The vein running from the ballsac to the anus, crossing over the taint region.

Commonly used for administering I.V.s
"While suzy was sucking my balls, her tongue followed my 'Taintous Veinous' to locate my asshole for a tossing of the salad."
by Hot Meat Injection November 24, 2007
Get the Taintous Veinous mug.