Someone who does something wrong or against the rules for a long period of time and then quits and tells on others doing the same thing.
Adam: "Dude, both me and Dave took off 10 sick days last month! This month hes decided to be good about it and now hes ratting on me for calling in sick too much!"
Josh:"Wow dude, hes just being a Canseco right now. He got what he wanted out of it and now hes the informant"
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A paid informant. No one respects them, except tools. Used as verb or noun or because of lack of self-respect and/or trueness to the game.
Ronnie straight-out canseco-ed Sean and Dustin i.e. he is a straight punk-ass canseco bitch.
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A fucking cuntbag that squeals on steroid users in MLB just to make himself, an admitted steroid user, look better
My friend turned into Jose Canseco and now everybody hates him becasue he's a douche bag.
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-adjective
1. To disclose confidential information about former associates.
2. To publish defamation, typically about friends/family.
-verb
3. The act of double-crossing.
4. Informal - a person who abandons or betrays his or her party, esp. in a time of trouble.
Hinkley went Canseco-Mode and got everyone on the Band Trip suspended.
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Steroids, an illegal substance usually used for performance enhancement.
The report named everyone on those Jose Canseco vitamins.
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Blosé Canseco:
The act of receiving fellatio while simultaneously injecting steroids
“Walked in on my roommate last night and his girl was blowing him as he injected...”
“Sounds like you caught him pulling a Blosé Canseco”