I was stapling a stack of papers and there was this side which refused to take in the staples. After tying again and again, I was about to tear the whole damn thing apart. Then I hit on the idea of placing everything on the floor and gave it one sharp hit. And it still wouldn't take. So, finally, I decided to alight the staple legs with the many holes on the paper and it worked. The next day, when I was about to staple another stack of paper, this time much thicker, and the staple gave me no problems. Haih.