prank in WordNet English dictionary

1. a ludicrous or grotesque act done for fun and amusement
   antic  joke  prank  trick  caper  put-on 
   
2. acting like a clown or buffoon
   buffoonery  clowning  japery  frivolity  harlequinade  prank 
   

1. dress up showily
   "He pranked himself out in his best clothes"
   prank 
   
2. dress or decorate showily or gaudily
   "Roses were pranking the lawn"
   prank