Dickwad is used versus or about a person who is pissing one off, in fact normally a person who is patronising usually with intimidatorial power against oneself.cf it is used as a reproach against a figure's attacking superiority of gesture, referring them as a
precious perpetrator, one of
annoying prestige- the prestige being the cause of one's upset and reason to retaliate or put them down (see example below). The key in the word is the second sylablle '
wad', referencing wealth to the offending entity who is patronising one(etc see above), as in 'wad of dick' in fact. a 'wad' of dickheaded-ness- dick-ness in this case being crucially about outsider patronisation
annoying-ness pissing one off crucially.