Masturbating, while sitting down in the shower. Spray cold water for a couple of minutes. After that you turn on the heat making the room humid. The key is to close your eyes and imagine you are sitting under a waterfall in Thailand.
Oh shit ! Chris flooded his hotel room again, he must have been having a tropical wank
A type of masturbation that happens only in an environment where it is hot outside, the window is open and a warm breeze permeates the air. Extra points if there is a fan on or some form of light air conditioning to really get that fruity feeling.
I had a tropical wank last night, you should try it!