rock the boat
Definition from Wiktionary, the free dictionary
- (idiomatic) To disturb the status quo or go against rules or conventions, as in an effort to get attention.
- I'd just jump in and fix it, but that's not my job, and I don't want to rock the boat.
- rain on somebody's parade
- make waves
- upset the applecart/upset someone's applecart
- bust someone's bubble
- put a damper on
- wet blanket
- party pooper
- stick in the mud