A word used by people who have no regard for the feelings of others. Used by those who have no empathy for those with Down Syndrome or another condition over which there is no control. It is right up there with libtard and retard. All these words have the ability to hurt feelings. The world would be a kinder place without them.
A fucktard is somebody who puts people's name in the urban dictionary and talks shit about them just because they've had bad experience with somebody who has the same name as other people who are completely different person from the cunt you had a bad experience with
Guy:yo I seen what you put on urban dictionary about Brian
Girl:but he broke my heart so all Brian's must be like that