What is what drug is crank?

"Crank" is a slang term for methamphetamine, a highly addictive stimulant that affects the central nervous system. It is typically found in the form of a white, odorless powder that can be ingested orally, injected, snorted, or smoked.

Methamphetamine increases the levels of dopamine in the brain, creating a sense of euphoria, increased energy, and alertness. However, prolonged use of methamphetamine can lead to serious physical and mental health issues, including addiction, paranoia, hallucinations, aggression, and severe dental problems known as "meth mouth."

Crank is often associated with risky and erratic behavior, as well as long periods of wakefulness followed by severe crashes. It is illegal to possess, sell, or manufacture methamphetamine in most countries, and its use is considered a serious public health concern.