Hide a Message in the Ballpen

Hello guys!!! another technique to hide your message

is to hide it inside your pen...

when i'm in third year high school i have a crush, and i'm very shy to express my feelings. while i'm walking thinking what to do,holding my pen, it gives me an idea that i can insert my message for him inside the ball pen. timing, he borrowed my pen, and i told him there's something inside the pen, after that, i run away from him and hoping that he saw my message... when he returned my pen, he is smiling at me without saying anything and run away.

choose a pen that cannot be distinguish the inside, so that the message will not be seen.