noun: portmanteau of "charter" and "retard". A misnomer referring to a Charter School of Wilmington student who displays zombie-like behavior in the hallways and excessive use of calculators for ridiculously simple math problems, such 2+2. These creatures typically have no others skills except that of math and science, and have no life.
Look at John. The only thing he knows how to do is use that fancy-schamancy calculator and name elements off the periodic table. What a chartard.
noun: a student who attends Cab Calloway School of the Arts. May be insane, crazy, and/or psycho according to wordly standards. Has a union with other cabbies. Can usually be seen doing stereotypical artsy things or attempting to bother chartards.
As cabbies, we unite to act ridiculous together and also to make art. Sort of.