For Pete's sake!
for Pete's sake
A mild oath of exasperation, annoyance, frustration, anger, or surprise. Would you let me finish my story, for Pete's sake? Oh for Pete's sake, I just had the car fixed and now you've put a dent in it! For Pete's sake! I haven't seen you in years!
See also: sake
For Pete's sake!and For pity's sake!; For the love of Mike!; For goodness sake!; For gosh sake!; For heaven('s) sake!
a mild exclamation of surprise or shock. For Pete's sake! How've ya been? For pity's sake! Ask the man in out of the cold!