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A name given to a particularly harsh ban to be used in Halo Reach by game developer Bungie LLC. "Xanadu" is a portmenteau of the words "ban" and Xanadu, the mythological summer residence of Kublai Khan.
Bungie is often credited as one of the first to use the term "Banhammer", a term they use themselves, but they felt that "Banhammer" wasn't a good enough representation of just how harsh that ban is. The ban includes permanent restriction to both in-game content, online access and features on their homepage, Bungie.net.

A player or account that gets this ban is said to be sent to "Banadu".
Man, he got a one-way ticket to Banadu!
Banadu by Larsirius. May 19, 2010
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It is a very beautiful and memorable place where you meet your behalf or your soulmate.
Where did you meet your wife?
I met her in Bandung.
or
Where would you go on your honeymoon?
Definitely Bandung.
Bandung by Mayellow January 24, 2009
Related Words
The little brown part at the bottom of a banana that no one in their right mind eats.
Only monkeys eat the bananus.
bananus by thlayli February 1, 2003

Bananular 

~Of or relating to a banana
~It's used in Raffi's song "Banana Phone"
"Ring ring ring ring ring ring ring
Banana phone
Ping pong ping pong ping pong ping
Ponana phone

It's no baloney,
It ain't a phony,
My cellular,
BANANULAR phone"
Bananular by Mike Rotch ~ October 5, 2004
Making a bet involving shoving a banana up your ass and losing but following through on that promise nonetheless.
May 25,2021 u/Rick_Of_Spades made a bet on r/Superstonk that if GME closed above $200 he would shove a banana up his ass🍌🍑.

GME closed above $200 and he delivered on his promise shoving a banana into his bananus.
Bananus by u/Patty8mack June 18, 2021

shada bandur 

Asian people use this to white chavs. This means a white monkey lol.

White people oftenly look confused after hearing this word xd
White boy: Hi miss
Random asian classmate: Ey shada bandur
shada bandur by J_venables April 10, 2019
The quintessential angry ex-child star. He's short, he's overbuilt and he's got an attitude.
That dude got me so aggro I went Bonaduce on him!
Bonaduce by moontrout September 26, 2005