Gearing Up

Verb for gear up

"Where's Bill?"
"Gearing up in the other room."

Geared Up

High on drugs that have been injected using a needle (most commonly methamphetamine and heroin).

"He's geared up for sure."

Gear Up

To inject drugs (most commonly methamphetamine or heroin) by use of a needle.

"All the boys are gonna gear up at the party. Do you want to as well?"