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The complex act of inhaling smoke and blowing it directly into someone's face while simultaneously using a male's masturbation hand motion to represent an ejaculation with one's smoke.
"Yo bro lets get some heiny!"

"I got some heiny from your mom last night!"

"WTF bro! Imma jizzypuff you for that shit"
by The Four Brosemen October 26, 2011