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A not-yet popular acronym for the phrase "In case you didn't know". Is sometimes confused for trying to say "Icy Dick"
Me: So ICYDK I am totally tired
Idiot guy: What?!?! Icy dick? Grooss, man!
Me: Go fuck yourself
Idiot guy: I already am *wink*
icydk by Sue Pirnova May 15, 2008
Related Words
ICUDK icedkiddo ICYDK ICDK IcedKnife icuck iCuddleOlivia icudn icukt
Acronym for "in case you didn't know", used when trying to keep long winded posts in internet forums and chat rooms brief.
INCYDK, I am so tired today because I was on the internet all night long.
ICYDK by I:A:N May 1, 2005

IcedKnife 

A man that never reply on twitter.
oh noooooo hes an icedknife
IcedKnife by Say heyyyyyyy April 26, 2022
in case you didn't notice
Karlie: Can you believe Jainey fucked Thomas?!
Shanaynay: Omgz like totally!! Hez so hawt!
Karlie: uh wtf
Shanaynay: jk icudn..
icudn by slimshadyd September 25, 2011
ICDK where you're going!
ICDK by SilverFlame November 13, 2016

iCuddleOlivia 

they are THE funniest person i’ve ever met !
Ex : iCuddleOlivia is the funniest person.