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1.
Finding hidden and abandoned buildings with the intention of having sex inside of these buildings.

Often the act of urban sexploration is illegal, as trespassing is usually necessary.

On the plus side, there is a very high change that you bump against photographers that like to call themselves urban explorers. This makes it more exiting.
"Honey, I'm feeling horny, let's go urban sexploring"
by amorpheus February 15, 2012