A Very commonly used abbreviation “I Don’t Know”
But there is more to it
IDK Corporation is a Japan Based Company which was founded in 1989. Started with Video Cables and RGB Splitters. And in 2015 they expended their territory to the USA and recently in 2016 they further expanded to Europe.
The present CEO is Hideki Iwasaki (Mr.)
Jason Mills (born May 24, 1992), better known by his stage name IDK (Ignorantly Delivering Knowledge), is an American rapper from Prince George’s County, Maryland.
IDK Love, a famous love song sung by Jeremy Zucker and featured in his album ‘&’.
IDK an online literary magazine started in 2013 and published mainly from Pittsburg, PA.
Well, three letters simply mean a lot be cautions before you use them. Use wisely