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1.
An abbreviation for "i don't even know", commonly used after doing something stupid. Originating from www.idontevenknow.com
loser1: dude, why the h3ll did you bang that nasty slutty?
loser2: lol, idek, she was dirty
loser1: right in the fupa, huh?
loser2: ... *dies*
by monkeyboy February 23, 2004
 
2.
used in AIM or computer messages. stand for: "I don't even know"
boys: "who is that?"

girl: "idek"
by Rachel Prytfdye78wo October 05, 2008
 
3.
idek is an awesome youtube video series by desandnate (destery and nathan)
IDEK1 IDEK2 IDEK3 IDEK4 IDEK5 IDEK6 IDEK7 IDEK8 IDEK9 IDEK10 IDEK11
by desandnateloverr April 19, 2011