Define 'impulse buy'?

I was in the mall this weekend. I told myself I shouldn't buy anything since I'm also trying to save money. But, I was supposed to buy a CD of this certain English band, but they didn't have it in stock. Then I saw EXO's Growl. I took it from the shelf without hesitating and immediately went to the counter. ^^; I wasn't planning on buying at all, but whatever.

I bought the Chinese version since my XOXO was the Kiss version already. And now looking at the pics, I want to make a hardcore Baekhyun fic too! *evil smile*

And I also pre-ordered a Nature Republic EXO standee OTL *says goodbye to money*