dope
/ˈdōp/
noun
a stupid person
an illicit drug (such as heroin or cocaine) used for its intoxicating or euphoric effects; especially : marijuana
a preparation (such as an anabolic steroid, diuretic, or tranquilizer) given to a racehorse to help or hinder its performance
I think fast drivers are dopes.
verb
to give a narcotic or intoxicating drug to
to surreptitiously put a sedating drug into
to administer a drug to (a horse) to help or hinder performance in a race
It was only when doped with scopolamine that he got any rest.
adjective
excellent —used as a generalized term of approval