Introduction: Eraser Prank

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About: I'm a mechanical engineer, and I like computer programming, mechanics, electronics and specially the robotics.
If you want to have a little fun with your friends follow me.

Step 1: What You Need

To do this prank you need a mechanical pen.
And also you need your friend's eraser; you can borrow it.

Step 2: One Easy Step

Embed the lead of your mechanical pen into the eraser corners.

Step 3: What Will Happens

Now when your friend is going to erase paper with eraser, he/she can't erase it clearly.