booting
Mainlining a drug into your bloodstream, drawing back the syringe to refill it with blood, and then injecting it back into your arm. The theory being, the blood injected back into your bloodstream, will carry with it, any residule narcotic leftover in the syringe.
"I saw the junkie in the alleyway booting his heroin three times over, before he finally nodded off."
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