Top Definition
Usually specific to soldiers, or other people who are forced to live in close proximity for long periods of time without either sexual activity or privacy, a whackatorium is a small shack made out of blankets, ponchos or poncho liners that is erected so that the builder can masturbate in relative peace. It is often explained away as a means to block light, or provide privacy to change, despite being erected almost exclusively around one's sleeping quarters.
syn: jack shack
God, we've only been here a week and Gale's already built himself a whackatorium!
by Barchack April 13, 2008
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