Looking on the internet deeply has found these results:

I don't know is the most popular phrase on the web.

Just spent $600 on my car, but now I'm debating on buying the Master Sword and Hylian Shield for my room. 10 results on the web	I don't know 157,900,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	Med School Parody of "Let It Go" from Frozen (University of Chicago Pritzker SOM). Beanie Meadow. SubscribeSubscribed ... Feb 6, 2015 ... I Don't Know. TomSka. SubscribeSubscribedUnsubscribe .... Elli Phantastic 3 weeks ago. I don't know what to say...hmm. Read more Show ... May 29, 2014 ... I Don't Know Feb 16, 2015 ... And though it feels tempting, avoid saying “I don't know.” What feels like a conclusive statement to you actually sounds like ellipses to your team ... And though it feels tempting, avoid saying “I don't know.” What feels like a conclusive statement to you actually sounds like ellipses to your team. It leaves them ...

Just spent $600 on my car, but now I'm debating on buying the Master Sword and Hylian Shield for my room.

10 results on the web

I don't know

157,900,000 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

Med School Parody of "Let It Go" from Frozen (University of Chicago Pritzker SOM). Beanie Meadow. SubscribeSubscribed ...
Feb 6, 2015 ... I Don't Know. TomSka. SubscribeSubscribedUnsubscribe .... Elli Phantastic 3 weeks ago. I don't know what to say...hmm. Read more Show ...
May 29, 2014 ... I Don't Know
Feb 16, 2015 ... And though it feels tempting, avoid saying “I don't know.” What feels like a conclusive statement to you actually sounds like ellipses to your team ...
And though it feels tempting, avoid saying “I don't know.” What feels like a conclusive statement to you actually sounds like ellipses to your team. It leaves them ...