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.

An important number for the 2020 election(s)

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