if you have no life - and you can PROVE it mathematically. 

if you know vector calculus but you can't remember how to do long division. 

if you chuckle whenever anyone says "centrifugal force." 

if you've actually used every single function on your graphing calculator. 

if it is sunny and 70°F outside, and you are working on a computer. 

if you know how to integrate a chicken and can take the derivative of water. 

if you've calculated that the World Series actually diverges. 

if you hesitate to look at something because you don't want to break down its wave function. 

if you have a pet named after a scientist. 

if you laugh at jokes about mathematicians. 

if the Humane Society has you arrested because you actually performed the Schrodinger's Cat experiment.

if you can translate English into Binary. 

if you avoid doing anything because you don't want to contribute to the eventual heat-death of the universe. 

if you consider ANY non-science course "easy." 

if when your professor asks you where your homework is, you claim to have accidentally determined its momentum so precisely, that according to Heisenberg it could be anywhere in the universe. 

if you'll assume that a "horse" is a "sphere" in order to make the math easier. 

if you understood more than five of these indicators. 

if you make a hard copy of this list, and post it on your door. 

If these indicators apply to you, there is good reason to suspect that you might be classified as a physics major. I hope this clears up any confusion.

-Author unknown