prank


prank (http://definr.com/prank)

     n 1: acting like a clown or buffoon [syn: buffoonery, clowning,
           frivolity, harlequinade]
     2: a ludicrous or grotesque act done for fun and amusement
        [syn: antic, joke, trick, caper, put-on]
     v 1:  dress or decorate showily or gaudily; "Roses were pranking
          the lawn"
     2: dress up showily; "He pranked himself out in his best
        clothes"