To take a crap and skip the use of traditional toilet paper and jump straight to the shower to clean up.
Steve: hey there Mike i see you made it into work on time today

Mike: Well i did a shower jump this morning and saved some time

Steve: I don't know what the hell a shower jump is but I'm promoting you to management!

Mike: gee thanks
by Duhwilly August 15, 2012
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when in a house with many people and someone gets in another shower at the same time as you, making the water cold.
Jerry: We were up at the cabin and Stephen shower jumped me!

Tim: That's cold dude.
by KenziiLoo August 4, 2008
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