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The "new" FYI. FYI is old school. JSYK (Just So You Know) is a more casual, friendly means of giving your friends and colleagues semi-useful information.
JSYK, it wasn't Roy, it was Isaac.

or

JSYK, I checked on that thing about Phil Collins and the drowning, and it's totally an Urban Legend.
by Summer January 04, 2006
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8
Jsyk, you dense piece of shit, you're gonna be in deep shit for stealing items from the managers office.
by Zicronium May 03, 2017
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btw, that dick picture i sent you is a bit old, i have pubes again jsyk
by lobodomy420 January 21, 2014
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11
like instead of saying something like just saying you could be like just so you know ... like I'm going to cook dinner just so you know ... just saying sounds Rude "JSYK"
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13
acronim for Just So You Know. can be used in a smug, sinsere, sarcastic, or normal sense.
( katie ¢¾¢¾ ) says: oh jsyk i quit Facebook.

- Zac - says: oh man i just added u as my friend. :(
by Campbell Vreeland July 06, 2008
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