Spent 30 minutes while watching old South Park making this list, I'm tapped right now:

Clarence Thomas
Cojones Thomas
Clarence Spermas


John Roberts
John Wadspurts
John Robeierts (one of the Germans)
John Wattlerts


Anthony Kennedy
Anthony Kennadsy
Anutty Kennedy


Ruth Bader Ginsburg
Ruth Bader Twinsburg
Ruth Tainter Ginsburg


Sonia Sotomayor
Sonia Scrotomayor


Stephen G. Breyer
Stephen T. Bagger
Steben wa Ballser
Spermin G. Breyer


Samuel A. Alito
Samuel A. Alichode
Samuel A. Allhuevos


Elena Kagan
Elena Keggsan
Elenad Danglan
Elena Hanglan


Antonin Scalia
Antonin Sackia
Antonitchian Scratchia