The phantom

[Britney]

n. A sudden, usually unnoticeable, expulsion of feces from ones anus, similar in quality to diarrhea. [Black in] color and containing no solid matter whatsoever, the [phantom] leaves a [burning sensation] inside the subject after it has run its course. It can most often be mistaken for urination by those nearby, but the foul odor and seemingly infinite wipe-time are clear signs.

v. to phantom - To disharge feces in the form of the phantom.