Firm

A slang term for cool.

He Wyatt you looking oretty firm today.

by Big Firm October 31, 2017

firm sack

When one enters ones extremely hot bath, his/hers scrotum sack becomes very firm and begins to look like a small dry brain

"oh ouch this bath seems to be slightly to hot, it is beginning to give me a firm sack, better add some cold water before it looks anymore like a brain"

by legacy Lloyd June 9, 2016

Firm

adjective.

A Florida slang term that is used to describe literally anything in a positive way.

"Lets go downtown I heard it's looking firm tonight"

"That chick thinks I'm firm as fuck bro"

by Yenkunto Radaminsko June 4, 2018