Methamphetamine also known as meth, ice, speed, crystal, glass, crank, biker food, is a psychostimulant of the amphetamine class of psychoactive drugs].

Methamphetamine increases alertness, concentration, energy. Can induce euphoria, enhance self-esteem and increase libido.

Methamphetamine has found use as both a medicinal and recreational drug. Used in treating ADHD and obesity in both adults and children.

During WW2 methamphetamine was used by the Germans, Japanese, Finnish, American and British among others. It was widely distributed across rank and division, from elite forces to tank crews and aircraft personnel, with many millions of tablets being distributed throughout the war. Used on a voluntary basis by roughly half of the U.S. Air Force pilots during the Persian Gulf War.

Methamphetamine is used daily by millions of Americans, who lead normal everyday lives without the much publicized "horrors of meth." Meth can be smoked, snorted, injected, or eaten.
Methamphetamine it's not just for breakfast anymore.
by MrWmnHtr2 October 20, 2012

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(mthm-ft-mn, -mn)
White trash vitamins, usually referred to as "junk" because the user generally lacks the required amount of teeth for proper alliteration.
"I told my bitch Crystal to stop suckin' off truckers for free metham..., methm..., Junk."
by bobby joe August 19, 2003

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Methamphetamine is a synthetic stimulant amphetamine-based. Meth is ephedrine, for example, by the reduction of obtained with hydrogen iodide or iodine + phosphorus and usually has a very high degree of purity.
Meth is usually snorted, but can also be swallowed. In dissolved form, methamphetamine is also injected. Among the rarer forms of consumption among smoking.
by WhatsNewPussyCat August 23, 2014

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the street drug of choice that keeps you from sleeping for night(s), makes u horny as fuck, and makes u want to go on a walkabout for an indefinite period of time. a little bit of tweak will give u a good buzz but too much can trip u out or worse. Methamphetamine is a supercharged stimulant which can overstimulate u in 2 lines unless ur diagnosed with ADD/ADHD which does an opposite affect as it actually brings yoou down from hyperactivity and euphoria but keeps u from sleeping and feeling tired.
wheres all the methamphetamine at? Lets get this tweakend on the show!!!!!
by skaterjack October 06, 2006

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a powdery drug used by Hick and ravers who wish to stay awake all night, also referred to as 'P'
oi - that dude back there is a 'P' junkie hes on the rampage.
by Brother_Number_One August 18, 2003

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