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A device made from one or more gas mask canisters in which to exhale when smoking weed. The military grade canister filters trap any and all smoke and odors.

A perfected iteration of the "paper towel tube and dryer sheets" model, and an absolute must for any DL stoner.
Kevin: "Man, how come Josh's apartment never smells like weed? He smokes ALL THE TIME."

Jake: " 'cause he always uses his hide-a-hit, bro. He invented it, after all."
by Mercynary(kik) March 07, 2017
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