A term originating from London used to describe a gangster or a rebel who does not respect authority. Often associated with urban culture, UK rap etc..

One can also use the term as a sarcastic insult..i.e if a person thinks they are "bad" but is conceived to be a pussy by others
i.e
person A "yo bro im running tingz around dese endz" ...
Person B "your sick blad, your a badman"

a "rudeboi" "rebel" "gangsta" or "scallywag"

doing a badman - is also known as doing a carboni, or doing a freddy. this word derives from the baddest man of all. name Frederico Carboni. an italian related to a terroist, who came to a private school to show his badman ways to all around. his name 'BADMAN' soon stuck from pupils and teachers alike.

name for a hard bloke.seen as a bit of a prick sometimes

a guy who thinks he is proper hard but is actually a puzzy

Often used in a sarcastic tone to indicate someone who has bitches, hoes, and be rollin' in cash and gash, especially in his council estate in Tower Hamlets.