Source : WordNet®

laugh at
     v : subject to laughter or ridicule; "The satirists ridiculed
         the plans for a new opera house"; "The students poked fun
         at the inexperienced teacher"; "His former students
         roasted the professor at his 60th birthday" [syn: {ridicule},
          {roast}, {guy}, {blackguard}, {jest at}, {rib}, {make
         fun}, {poke fun}]