Don’t rock the trough!

A personal favorite of mine (in fact it is the tagline under my picture), this is a mixture of “don’t rock the boat” (don’t upset people by trying to change the situation) and “feed at the trough” (getting something, usually money, without working), both describing passivity and compliance.  This malaphor is unusual in that the combination actually is closer in definition to a third phrase – “don’t bite the hand that feeds you” (don’t criticize the person or organization that helps or pays you).