the vein/tube that connects the testicles to the prostate gland, and then to the urethra to release semen.
(This IS a real word!)
If you cut off my vas deferens, I will never have babies!!
by nasal puff October 20, 2005
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A part of the male anatomy. Also can be used as an insult.
Stan: "Just a second fatass!"
Cartman: "You Vas Deferens"
by xsamix November 30, 2006
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