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The rubbing of one's scrotum on the possessions of another, often carried out surreptitiously as a form of revenge.
"The night before I quit, I snuck into my boss's office, found his humidor, and sack blasted the business ends of his cigars."

"I can't believe your roommate slept with your girlfriend." "I can't believe he still hasn't realized that I've been sack blasting his toothbrush every night after he falls asleep."
by Shamelesss July 11, 2013
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