Jokarman 

An absolute weirdo who prefers having fun and trolling during games than actually winning them.

Denny you are such a Jokarman, cucking me on the last lap of Mariokart...

Jokarman by Jokarman November 24, 2018

Jokerman 

used to describe a young, extremely energetic and demented man. Usually will have consumed a sizeable amount of alcohol. Prone to removing clothes, giggling uncontrolably, waving hands in the air whilst shouting 'womp womp' or 'banter' etc.
In certain circumstance has been known to cause property damage and personal facial injuries.
A liability to all around him.

"Jokerman was insatiable last night, absolutely demented!"

"He's had a rake load of booze, I'd say we'll be seeing the Jokerman at some stage!!"

"Did you hear the Jokerman threw a rock through a prominent south Dublin apartment block's door?!! Demented!"

Jokerman by the archie April 8, 2007

jokerman 

A clown, prankster, jokester. Term originates from the "Jokerman Font" typeface, found predominantly on Windows-based computers.

You're a jokerman. A complete jokerman.

jokerman by saucemonkeys July 29, 2011