People that are prejudice against someone based on their age. Age-ists are against giving ages 18 and under special privleges (like letting them see the Colbert Report) You can usually recognize an AGE-ist by the color of their hair. But there is a second side to the term age-ist. It also refers to those who do not believe that old people are worth the inheritance they sit on. These people are the true revolutionaries. These proud youths are looking out for the better or man kind; paving the way for our future.