Different Things to Do

Adjective done in a private way or place, often for illegal purposes
clandestine
Gamers play as a CIA operative or Special Forces agent. Members of a clandestine agency are tasked with uncovering a Soviet chemical weapon code named Nova-6.
Adjective deliberately and openly disobedient
Yarn bombing has been described as warm and fuzzy defiant art. Those who engage in the street graffiti delight in creating random acts of art on urban architecture.
Adjective heroic or grand in scale or character
Found in most any local convenient store, Coke and Mentos react together in an epic eruption of fizz. The stunt has generated loads of viral buzz.
Noun elaborate and spectacular entertainment or production
Contestants in the traditional cheese-rolling extravaganza normally tumble 200 meters downhill in Brockworth in an attempt to catch a block of cheese.
Phrase have your true identity kept secret
go incognito
Once in a while it's nice to change things up and go incognito -- like this poodle who is undergoing a Halloween transformation in Tokyo.
Noun playful conduct or activity that often causes trouble
The freedom of The Sims 3 will inspire you with endless creative possibilities and amuse you with unexpected moments of surprise and mischief!
Noun device consisting of an object mounted so that it swings freely under the influence
With its pendulum system, the bungee jump at Bloukrans Bridge gives a smooth, comfortable ride... starting at a height of 708 feet.
Noun sudden burst of activity or speed
Zombies have gone from a crawl to a sprint as themes have shifted from Cold War worries about radiological exposure to terrorism-era fears about sudden biological attacks.
Noun lasting strength and energy
Beyblades, battling tops made by Hasbro, are the hot toy this Christmas season, popular for their ability to be customized for stamina, style and offense.
Adjective engaging in daring and romantic adventures
Avast, ye scurvy knave! September 19th is Talk Like a Pirate Day, so break out your best swashbuckling jargon.