The second you suspect it; "Your Honour your conduct has caused me to reasonably believe that you have formed a biased position as regards this matter, and could serve to damage my interests. Would you please recuse yourself"?
(Note: ending that question with "..you sanctimonious, worthless parasitic bitch"? ...is optional.)
Printed copy · Anthology Volume 5, page 531Printed copy from The Tender For Law Anthology, Volume 5, page 531 (printed 13 June 2014). Added by this site; not part of the Facebook export.