A Sneaky Ghost

The story that I am about to tell you is the one experienced by my friend. This story is a little bit funny but its REAL.

It happened last year, around the month of October. I was at school and it was two in the afternoon. Since we don't have any classes left, me and my friends decided to finish our papers for our SIP (Science Investigatory Project) at the school's computer laboratory.

There were a few students inside so we sat next to each other. I was sitting next to my friend Ariana (not her real name) because I knew she can help me with my papers. I was busy searching something for my paper when suddenly Ariana jerked from her sit. I asked her what's wrong and she told me that my classmate Cathy (not her real name) was tickling her butt underneath her chair.

Our plastic chairs has small holes underneath it which my classmate Cathy uses it to tickle Ariana's butt. We knew that Cathy is fond of messing/playing around even if she is already warned by one of our teachers who is in-charged of the computer lab because of the ruckus she made.

Ariana is seen to be getting annoyed by Cathy who keeps on tickling her butt for four times already. When the fifth tickle came, Ariana stood up and shouted in an annoyed manner "Cathy, pwede ba! Tama na! Nakakainis kana ha!" (Cathy, Please stop it already! It's getting so annoying!) Everyone of us in the room stopped on what we are doing and looked at Ariana.

I asked her again and she told me that Cathy keeps on tickling her butt which annoyed her already and to our surprised Cathy wasn't tickling her anymore. She was just talking with our teacher who was in-charged of the computer lab which is far away from where she is sitting. I was the only one sitting next to Ariana but I wasn't the one tickling her butt. So, who was it?