A slang term with two distinct senses: a go-fast is a fast speedboat used by drug smugglers to outrun coast guard vessels (the primary drug-trade usage); and separately, go-fast is also a slang term for methamphetamine, referencing its stimulant effects. Both senses are used in law enforcement and media contexts.
The coastguard spotted a go-fast heading toward the coast with its lights off.
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
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(slang) A speedboat.
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(slang) Methamphetamine.
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