The Joker is a special card found in most modern decks of playing cards, or a Mahjong tile in some Mahjong game sets.
It is believed that the term "Joker" comes from a mispronunciation of Juker, the German/Alsatian name for the game Euchre. The card was originally introduced in about 1860 for games of that family to be used as the highest trump. Catherine Perry Hargrave documents jokers from 1862 and 1865 in her book A History of Playing Cards. The 1862 card has a tiger on it and the label "Highest Trump", while the one from 1865 is inscribed "This card takes either Bower" and "Imperial Bower", or "Highest Trump Card". So it may be that Euchre was the game for which the Joker was invented, not Poker because part of this confusion on the issue may be because both games spread simultaneously northward on the Mississippi.

The Joker came to be represented as a clown or court jester by the 1880s and often still is today. There are usually 2 Jokers per deck, often noticeably different. For instance Bicycle Playing Cards prints their company's guarantee claim on only one. More common traits are the appearance of colored and black/noncolored Jokers. At times the Jokers will each be colored to match the colors used for suits; there will be a red Joker, and a black Joker. In games where the jokers may need to be compared, the red or full-color joker usually outranks the black-and-white one; if the joker colors are similar the joker without a guarantee will outrank the guaranteed one.
I was playing spades with a bunch of my friends, and they thought they were gonna set us, till I busted out with the Jokers Card!
by Card Playa 69 March 27, 2010
the joker cards something you juggahos will never understand
after all 6 have risen the end of time will consume us all
by jake January 21, 2004
One of the 6 (soon to be seven) albums released by Insane Clown Posse labled as the Carnival of Carnage, the Ringmaster, the Riddlebox, the Great Milenko, the Amazing Jeckel Brothers, or the Wraith.
by Amy December 6, 2003
The Spirit of the Dark Carnival gave the six Joker Cards to Insane Clown Posse which is a revelation that they are spreading. Each Card has a specific message telling the world to end it's evil ways before the end consumes us all.

The six cards are: Carnival Of Carnage, Ringmaster, The Riddlebox, The Great Milenko, The Amazing Jeckel Brothers, and The Wraith.
Yo, I just realized Ringmaster is like, the one who judges fate or something weird like that. What a crazy Joker Card
by psychoKitten April 8, 2006
A penis.

It's a euphemism popularized by the Insane Clown Posse on their first EP, Beverly Kills 50187.
So, this bitch was suckin' my dick, right? All the sudden, she started gaggin'. I guess somebody choked on a joker's card!
by Vali-Ent October 29, 2010
Pulling out penis out during sex and performing a suprise cumshot.
My girlfriend was pissed off last night when I pulled a joker card on her face.
by Fallenb4u March 18, 2017
The Six Joker's Cards are as follows: Carnival of Carnage, the Ringmaster, Riddlebox, the Great Milenko, the Amazing Jeckel Brothers and the Wraith. ICP named their six albums after each of the Joker's Cards and on each album is (at least) one song that explains what exactly the card means.

ICP claims to have been visited by the spirit of the Dark Carnival, who showed them six revelations in the form of the Joker's Cards. ICP then made it their mission to spread the word, and tell everyone to change their evil ways before it's too late, thus naming their six albums after each Joker's Card and putting a specific revelation into each. The first Joker's Card, Carnival of Carnage, was released in 1991; their final revelation, the Wraith, was released in 2004.
I understand the Six Joker's Cards now, and I have to change my ways before the Dark Carnival claims my soul.
by loTuS_kiLLA August 27, 2006