JSYK

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 IsaacN January 06, 2006
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JSYK

JSYK, this martini is delicious
by Cockroach3409 July 13, 2009
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JSYK

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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JSYK

JSYK, I'll be arriving at O'Hare about 5:30PM tomorrow.
by jpneal January 08, 2021
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JSYK

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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JSYK

by EddyWayne October 18, 2011
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JSYK

JSYK stands for Just So You Know.
My friend says it all the time because she thinks she's chill when she says it because noone else knows what it stands for. Then we have to just say it all out. It's more fun to just leave the person hanging by not telling them what it means.
Guy: Woo, Look at that girl in those shorts! Mmm.
Girl: JSYK, She's a huge slut. She's got babies daddies all around here right now.
by Bones77 June 14, 2007
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