Joiner 

When there are three or more restroom urinals and another guy walks up to the one next to you.

Jim's a joiner, he loves to size up the guys in hopes of getting something.

Joiner by b4urn March 14, 2020

Joiner 

People who apply to join a club but have a hard time following through. Flakes.

He wanted to join DHBC but became a joiner.

Joiner by BOltupla August 20, 2023

Joiner King

1). A soulless individual appearing to have no obvious basic social skills apart from the ability to communicate online through instant messaging programs, with strange smilies.

2). A backstabber and a thief.

3). Somebody obsessed with 24.

4). A homophobe.

1). Person A - Hi Ben, how are you today?

Joiner King - ._.

2). Person A - Dude, did Joiner King ever pay you back that money you kindly lent him?

Person B - Did he fuck?! He told me to fuck off and called me a cunt! That's gratitude for you!

3). Joiner King - "OMG I WANT TO FUCK JACK BAUER IN THE ASS"

4). Person A - "I love you Andrew."

Person B - "I love you too Rick".

Joiner King - "OMG I've just been physically sick"

Joiner King by A Pretentious Camel August 12, 2008

joiner player 

Computer controlled players in a video game, possibly can be taken over by a human player

Are you playing with a real person? No it's a joiner player

joiner player by jimtendo2013 October 15, 2021

January Joiner 

Someone who joins the gym in January as part of a New Year's resolution and by February is back to being a couch potato.

I can't get a treadmill until February because the January Joiners are all using them.

January Joiner by Brent Michael January 15, 2006

Shawn/Joiner 

Shawns/Joiners are typically insane, ridiculous individuals. They like playing Team Fortress 2, but only if by playing, you mean HAXING. They were some of the first people to use words like "Fail," in real life and they're the only people who can fit the word "Headshot" into any conversation. They also do very good impressions.
You will usually be able to recognize a Shawn/Joiner from across the room by his ability to tell of his latest TF2 adventures for at least 10 minutes at a time, in a variety of voices, primarily using the stereotypical "Spy" accent.

Shawn/Joiner
Ash: Did you hear that Shawn kid with a funny accent in the second row talking about "headshot"-ing people? Is he a Russian exchange student?

Alex: No, he's just talking about his latest conquests in TF2.

---------
Rode: Joiner, quit talking about your video games! I need to start class!

Joiner: Nein!

Shawn/Joiner by AJ^2 January 18, 2010

January Joiner 

People who spend the whole year eating like there is no tomorrow, however, they rationalize it by convincing themselves that they will join the gym after new years. Also known as CHUB CLUB. By mid-january they are nowhere to be found.

Gym rat to gym rat: Gosh I hate it right after New Year's when all the January Joiners come in and take up all the machines!

Later in February: Thank God the chub club is gone and we can use the precor during peak hours

January Joiner by XBevil January 20, 2006