Dickroach is a
single word used to insult someone, or describe their negative actions or attitude.
Don't question the
existence of the word, just use it.
Robert - John locked me out of his car in
the hood, and I got stabbed!
Sam - Who cares?
Robert - Well when I went to the hospital I gave them your credit card for the stitches...
Sam - Wowww, both of you are f*cking dickroaches!!!