To have money burning a hole in your pocket that way.
You could try a MP (not necessarily an AMP I mean); if you are in the East Bay, you could go to GG or Normandy. If you don't have access to the review section, look at a couple of threads on the General board related to GG for some names.
Of course, if this route doesn't appeal to you, be careful because usually (not always) the non-MP solutions that are available at such a moments notice are often ROBs.
You could find something to do that doesn't necessarily involve sex, but costs money. An excellent dinner and going to see "Watching Porn" or something such.
Or you could save your money for another day.
Unless somebody else posts a better idea here.