Intention

My question is about the reactions I receive when I change my profile picture to that of an old high school acquaintance who I didn't really know but am friends with on Facebook. The intention is to confuse people, particularly my high school classmates. By choosing someone I was not very close friends with, I am curious to see how my high school classmates will respond, whether they post positive, negative or confused comments on the picture, like it, or PM me. I also want to see how my college friends react to the picture to see if they are confused or just don't care very much. I chose this method to confuse people because my previous profile pictures have been of my art, and my current picture is one of myself, so I felt that having a similar picture would not create too much of an effect. What other choice do I have but to use someone else's picture to create a bigger effect?