When the stress of work gets to be too much, an increasing number of executives are escaping from the cares of this world in less conventional ways. Instead of simply retreating to the beach, to the mountains, or a golf outing, many adults are, well, acting like children.

At California's Camp GetAway, an adult can participate in sing-alongs, water balloon fights, kickball, s'mores around the campfire, and a sneaky excursion out of the cabin to toilet-paper the cars and cabins of other campers.

Some adults opt for the increasingly popular Rock 'n Roll Fantasy Camps, where even unskilled participants can join in a jam session with real rock musicians.

Helen Oseen founded The Ultimate Pajama Party, a camp where older women can don their pajamas, pillow fight, and sit on the bed and share confidences late into the night. Oseen began the camp after "identifying in my own life that I worked a lot and didn't play very much."

Author Christopher Noxon coined the phrase "rejuveniling" in his book Rejuvenile: Kickball, Cartoons, Cupcakes, and the Reinvention of the American Grown-Up. A father of three living in Los Angeles, Noxon said: "In a world where pressure and problems pile on non-stop, more grown-ups are seeking a vacation from their adult side."