What does the phrase "Rock the boat" mean?

[cynthiamatthews@ymailecom]

Was does the phrase mean?

 

[irishlady]

it means don't shake things up where they can turn up side down

 

[AliM]

when you rock a small boat, the boat will capsize.

 

[auroras1]

upset the way things are, cause a problem

 

[Johka]

rocking a boat can flip it over, sink or if another is in the boat, they can fall out.