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1.
When you spike something that resembles spunk (like shampoo) with a load of semen out of dislike for the person who uses the spiked fluid, i.e. your ex-girlfriends hair-conditioner.
Hey Bro, I spunk-spiked my teachers yogurt the other day while I was in detention, he deserved it for being such an idiot...
by McDanni December 09, 2011