Wow, what a good idea that saying you have red eye is a good excuse because nobody wants to be anyone near someone who has this condition. Red eye is also known as conjunctivitis. It is characterized by the redness and inflammation of the conjunctiva. This is the moist tissue that covers the surface of the eyes and lines the eyelid. It's not by any means an exotic disease. In fact, it's a fairly common condition. As my personal experience, you can eat some peppers, which will irritate your eyes and turn red. Or you can use some makeup, which will last for a longer time. Moreover, at the page http://healthbooklet.hubpages.com/hub/How-to-Fake-Pink-Eye-Treatment-Redness-and-discharge, you can find detailed information about what you want. Hope this helpful.