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2.
"ikds" and its variant "Ikds" are acronyms used online or in text messages for the phrase "I know dumb shit."
A: Hey!
B: What?
A: lulz is the plural of lol.
B: ikds
A: ?
B: I know dumb shit.
A: lulz
by Josiah Stufflebean April 10, 2011
 
1.
IKD
"I know, dude!"

When both you and your pal are thinking the same thing. The new "ikr?"
I saw that movie, Avatar last week.
That movie was dank.
IKD!
by Jonasan Mashuuzu March 26, 2010
 
3.
IKD
IKD: I Know Dude
Ted: That was THE funniest thing ever!!
Bob: Ikd!!
by soccerstuff31 May 30, 2011