1. To be wack. Worthy of being mocked. Weak, chumpish, and generally to be avoided.

2. Mocking term of friends and/ or enemies.

It's origins lie in New York City, and with a national commercial campaign by Burger King where it stated "Don't be a herb, get the Whopper." In it Herb was a combination of a nerd and a moron.
Yo wassup herbs, what time we drinking?

This party got way too many herbs, I'm out.

That kid asks way too many questions, he's a straight herb son.
by TooDarkMark December 7, 2012
a person , most commonly male, that is generally considered as uncool, or failing to accord with the values or styles (as of dress , or behavior) of a particular group: not accepted or admired as cool or proper.
He's a herb.
by Liv Demarco March 10, 2011
Someone who tries too hard to be cool. An overzealous poseur. When you think you're on some next shit, but you're really on some bullshit
Man, I saw that herb on Bedford Ave., wearing a mesh hat and a Great White shirt, and carrying a can of Sparks.

Why is R. Kelly wearing that Lone Ranger mask? Dude is a herb.

Tell that herb to cool down. No one else wants the DJ to play electroclash.
by GullibleZine August 13, 2006
It's absolutely clear that ganja herb is the healing of the nation
by Herbsman420 March 10, 2010
A person who is a follower who has no life, who can not think on their own, a Loch
Danny is a herb because what ever ruben says for him to do, he does
by pimpwitalimp February 19, 2008