rain on someone's parade

First appeared around 1900.

• "Sanju Baba, we learn, is rather miffed at the way Kunder rained on his parade and took away the spotlight from Agneepath's success."
• "“Given that Europe is still shrouded by the cloud of recession, a weak PMI -- though not rain on the parade -- will surely damp investor sentiment,” said Manish Singh, the London-based head of investment at Crossbridge Capital"

• burst someone's bubble
• buzzkill
• killjoy
• make waves
• party pooper
• piss on someone's bonfire
• put a damper on
• rock the boat
• spoilsport
• stick in the mud
• throw cold water on
• upset the applecart
• wet blanket
• yuck someone's yum