buffoonery, clownery, clowning, foolery, high jinks, monkey business, monkeying, monkeyshines, roughhouse, roughhousing, shenanigans, skylarking,

childishness, clownishness, foolishness, funning, jesting, joking, nonsense, silliness, waggery,boisterousness, rambunctiousness, rowdiness, rowdyism, devilry (or deviltry), impishness, knavery, mischief, mischievousness, prankishness, rascality, roguery, roguishness, trickery,

cavorting, frivolity, frolicking, gamboling, merrymaking, playfulness, revelry, roistering, romping, sporting, sportiveness