How to Become Invisible

1. Wear specs.
2. Have a Southeast Asian History book before you at a table
3. Have a confused look on your face
4. Dont say a word
5. Voila! You are now invisible!

Was sitting outside the library (go left after exiting, tables there) revising, reading my book bright as day. These two girls came along, one with her food/lunch. The one with the food placed the food right in front of my book (they were touching) she was right before me. I looked up, i mean im all right with people sharing the table to have a bite, study or just to adjust their bag and stuff. She didnt look at me and continue chatting with her friend. Her friend probably have seen me and is just as confused. Only after a few lengthy moments, she chatted somewhat with her fren, only then she saw me. Her fren went like 'Didnt you see him sitting there?' I just had to say to them after they shifted to the other end of the table, smiling and gave a quick laugh, 'Am I invisible?' Though im not sure how they viewed it, maybe im sounded pissed or something but i was just laughing it off.