Akin to Smacktard slightly less offensive however. One can often call their friends a smackwad without being punched in the nuts on account of it not implying they are a
retard... just a
jerk. While -wad can be applied to a multitude of derogatory terms to imply the person is not just a '
jerk' for instance but a WAD of it (emphasis), smackwad is one of those words you can use is everyday conversation without really offending anybody enough to suffer repercussions.
A fool, a jerk