The Swooshing Heard Round the World

Who'd a thunk that a little masturbating under the desk would get worldwide attention? As the UK's Reuters wire service reports (notice the headline):

OKLAHOMA CITY (Reuters) - An Oklahoma state judge frequently masturbated and used a device for enhancing erections while his court was in session, charges a petition by the state's attorney general seeking his removal ... Several witnesses, including jurors in Thompson's court and police officers called to testify in trials, said in the petition they heard the "swooshing" sound of a penis pump during trials and saw the judge slumped in his chair, with his elbows on his knees, working the device.

What is a penis pump anyway? Is having a judge masturbate during your trial grounds for a mistrial?