1) A completely self-absorbed, useless asshole with shit for brains;

2) A person so irredeemably stupid that their idiotic behavior causes pain to everyone that they interact with.

A pubic hair piece. A toupee for the pubic area/genitals. In the 1700’s when mercury was used to treat sexually transmitted diseases (Gonorrhea or Syphilis) one of the side effects was the loss of pubic hair. To disguise this condition, that was not cured by mercury, a Merkin was employed.

An arrogant, ignorant imbecile incapable of forming a single coherent thought in their pea brain. Originating from the word Dickhead , this extension of dickhead adds the weed factor, explaining that syou are not only an asshole and a prick , but you are an unoriginal, asshole/prick and not in any way special or different. That there are in fact many like you in the world, nothing but a pest that should be torn from the earth and burned before the seed spreads and creates more dickweeds. (I.e your children)

A person who perpetually exercises poor social judgement.

Your neighbor Ben

A worthless and obnoxious person. A "Dick Weed" is similar to a "Dick Head."
This was a common phrase in Southern Californian surf culture in the late 1970s and early 1980s.

1.) An intensely stupid person.
2.) A rare breed of plant