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8.
A donkey's favorite action in poker. When used by a shark it means the odds are in his favor so fold or possibly that he is willing to gamble for the pot, are you?
The donkey went all-in for the fifth time in a row.
by AlienSorrow May 27, 2007
 
9.
Abet placed in poker when a player is letting the other players know that he will put his whole bank in to continue the game even though he may not be able to match with the other players have.
"I'm all in man, lets go, my royal will kill you.Ha Ha!"
by lonestar June 25, 2004
 
10.
A quite Hilarious Term used commonly in poker, and sometimes used in real life situations for a good laugh. to be all in, is to show all your chips to the players at the table, to take A GIANT risk. With all your chips in, you could very well get your ass handed to you.
Hugh: Im all in, pocket twos.
Raymond: I'll raise your all in, with a 5, 8.
::ANOTHER SITUATION::
Gunthair: Im all in
Steven: What....? Hurry up and finish your dinner son
Gunthair: I'll show my bluff
Steven: Son, are you okay? Are you on drugs
Gunthair: Yeah I got a garbage hand, i'll fold.
by Floppei Wangs March 23, 2006
 
11.
From www.holdempoker.com

Betting all your money on one hand, usually moronically.
You go all-in with a queen high and some cowboy hat wearing jew busts you with a pair of threes.

'Garry, should I go all in with a pair of sixes?'
'Yeah, go for it'
....
'FUCK. I hate you. This is all your fault.'

'Did I see you with Miss Johnstone earlier?'
'Yeah, I went all in'
by Garry2 February 13, 2005