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A cliche used when anything unanticipated happens, typically used as a cop-out. Origin is from the cursor behavior seen on personal computers when moving the mouse causes the cursor to travel quickly and erratically across the monitor clicking on items, moving files, starting applications, or causing other unintended actions.
I tried to send you that TPS report, but my "mouse jumped" and it is gone now.

I said no to drugs, but my "mouse jumped" and now I'm an addict.

We used a condom, but my "mouse jumped" and now she's pregnant
by the_curmudgeon August 11, 2009
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