She felt snug as a bug in her cozy sweater.

I don't know him from a can of paint.

The old house was as empty as a pauper's purse.

It is important to keep a civil tongue when discussing sensitive topics.

He needs to put a civil tongue in his mouth.

It is important to keep a civil tongue in one's mouth.

Remember to keep a civil tongue in your head when speaking to others.

He needs to put a civil tongue in his head.

I can finish this project by tomorrow at a push.

He is bringing a knife to a gunfight.