A slang term (correctly, "psych") that was big in the 1990s. It's similar in usage to adding "not" to the end of a statement that's meant to be either sarcastic, a joke, or both.
1. Sure, you can borrow my brand new car for the weekend. Psych!

2. Yeah, that shirt looks great on you. Not!

by forced name November 25, 2007
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The incorrect way to spell Psych (as in to psych out or psych up, or psyched).
"didn't you know there is going to be a test in class today?"
(classmate): "WHAT?????"
"PSYCH !!! (or as incorrectly spelled here, sike) the test isn't until next week!"
by CLS 8888 September 15, 2016
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Misspelling of slang term "psych", which is short for "psyched out". It can be used at the end of a statement intended to psychologically cause its recipient to be taken off guard or aback, hence allowing for a competitive advantage by the person using the statement. It is intended to be used, & then its success is to be pointed out publicly, as further source of creating an embarrassing competitive edge.
Hey Joey, your sister let me see her naked last night. Sike!
by ScottySlave November 25, 2007
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The immediately preceding statement is false and was told to mislead.
I really miss that show Blossom ... SIKE!
by iwastoodrunk March 30, 2004
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Knowing Sonia was thirsty, Jonathan teased her with his soda. "Here, you can have a sip...psych!"
by Jonathan Hamilton April 30, 2005
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An slang term that began in the late 70's. The word sike is used to negate what ever statement might have come before it. It basically means, "just kidding" or "yea, right". Usually, a pause is given between the original statement and the "sike" as to see if the original comment caused a reaction, before people realize that the person was just kidding. It is used in exactly the same way "Not!" was used, when coined by the Wayne's World movies.
George Bush is the greatest president ever... Sike!
by Brian Press November 30, 2007
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