1. I don't know
2. I Donkey Kong - another way of saying I don't know, but much cooler.

2.

Person 1: Hey, are we going to go watch the game tonight?
Person 2: I donkey kong :'(
Person 1: WTF is that supposed to mean?!!!
Person 2: idk
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Idk means that your not sure but u leaning toward yes
by Ffh n.v klj April 29, 2020
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The best answer you can give to anything!
Me: What's up?
You: idk

Me: I love you!
You: idk

Me: *Sexes you*
You: idk
by Booisme April 27, 2008
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Word commonly used by teenyboppers in IM conversations even though they have no clue what it means.
Some guy: Hey, whats your phone number?
Teenybopper: idk
Some guy: What the fuck is an idk???
Teenybopper: I dont know
Some guy: If you dont know what it means then why the hell did you say it??
Teenybopper: Uhh.... (Teenybopper has signed off at 14:42)
by towel401 September 23, 2004
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The newest in a long list of annoying internet acronyms, "idk" has become extraordinarily popular with the 13-year-old lie-about-your-age-to-get-on-MySpace grade school slut crowd.

Commonly seen as a BS response when filling out memes and surveys. Double annoyance points when paired with the equally meaningless "lol."
Last time you dreamed something really crazy and then it happened the next day: Idk lol
by d4rk September 20, 2005
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idk mean "I don't know" but really when teens use it it means there annoyed and are saying I don't know and I don't give a fuck. True story
Mom: DO YOU KNOW WHERE THE TAPE IS

You: idk *sign annoyed*
Mom: ...
by Wild Owls Sienna January 16, 2016
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Jeff: "What's your name?" Un named person: "Idk"
by Common Boganasaurus May 28, 2018
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