Just So You Know. A newer term then the old and overused FYI. JSYK is a good alternative to BTW, as when you use BTW in a sentence, people might take more offense. Usually placed at the beginning of a sentence and commonly used in texting.
ANNA: BTW, Mom, I ate all the cookies that you made.
MOM: What? I was saving those! What are you going to do next, eat the cake I made for your brother's birthday?
AARON: FYI, I ate all of the cookies you made, Mom.
MOM: Don't talk to your mother so rudely, Aaron! Go to your room!
AMELIA: JSYK, I ate all those cookies you made, Mom.
MOM: Oh, that's okay, Amelia. I can always make more.
MOM: What? I was saving those! What are you going to do next, eat the cake I made for your brother's birthday?
AARON: FYI, I ate all of the cookies you made, Mom.
MOM: Don't talk to your mother so rudely, Aaron! Go to your room!
AMELIA: JSYK, I ate all those cookies you made, Mom.
MOM: Oh, that's okay, Amelia. I can always make more.
by tHeChOcOlAtEbOoKwOrM March 04, 2016

by jsyk, it's Ursula January 14, 2008

by filiru2pny June 25, 2008

by Brian February 19, 2005

Short for "Just so you know"
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

by lobodomy420 January 22, 2014

by Campbell Vreeland July 06, 2008
