Crabgrass' secret: The despised weed makes herbicide to kill neighboring plants Contrary to popular belief, crabgrass does not thrive in lawns, gardens and farm fields by simply crowding out other plants. A new study has found that the much-despised weed actually produces its own herbicides that kill nearby plants.
June 26, 2013 - Science Daily
Frank Luntz in Monsters and Critics.com GOP pollster Frank Luntz denounced Paul's supporters as "the equivalent of crabgrass . . . not the grass you want, and it spreads faster than the real stuff."
George Carlin in Milwaukee Journal Sentinel Prior to that, it was all mother-in-law, crabgrass jokes, very superficial, and the Jewish Catskills stuff, all pulling stuff out of the same bag, very superficial and very nervous about sexual jokes,Carlin said.