caper

skylarking

high jinks (also hijinks), horseplay, play, roughhousing, rowdyism

shenanigan(s), tomfoolery

joking, kidding, teasing

gambit, hoax, maneuver, ploy

caprice, conceit, fancy, vagary, whim, whimsy (also whimsey)

fraud, hanky-panky, hoodwinking, ruse, sham, stratagem, subterfuge, trickery, wile

bound, hop, leap, lope, skip, spring, trip, tumble

dance, prance

carouse, revel, roister

carry on, fool around, horse around

clown, cut up

joyride, roughhouse, skylark

kite