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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
 
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
 
3.
IKD
IKD: I Know Dude
Ted: That was THE funniest thing ever!!
Bob: Ikd!!
by soccerstuff31 May 30, 2011