Have you heard about invisible link ? Or do you know about invisible link?

Okayy, No problem let's read this outline for better understanding.

We're in college... I have 3 chums.....I always fight with them and make them angry on me....one day in lunch break..... we all are in garden.......I purchased invisible link.....suddenly I saw one of my chum's is coming....I threw invisible ink to her and spoiled her white dress.....I thought she wouldn't angry on me......but she slaped me in front of.......I got nervous......later on she told me..... that was a prank....she knew about this whole drama.....and for slapping she gave me a little treat.