Quote: JEAN CAPDOUZE "Peter Best, the drummer for the Beatles before Ringo Starr came along. Peter lost the chance of making hundreds of millions -- it was like losing a winning lottery ticket -- so we all feel his pain.
Thus caring people like "Bullseye," when frustrated with problems like persistent Tom Johnstone obsessives, always invoke poor Peter Best's name as he was best known -- "Pete".'"
According to the OED, ‘For Pete’s sake’ became a substitute for ‘For Christ’s sake’ over a century ago.