The more we learn, the more we realize how little we know.

Don't do things by halves.

He never did his work anyhow.

He is not a man to trifle with.

No sooner is one lie out of your mouth than you're telling yet another.

The contract was rather loose.

Enough TV, already!

Don't trifle with such serious matters.

Don't trifle with the matter.

He's just about had enough of the Smiths' TV.

Stop pestering me. I'm busy.

Don't give me that!

Give me a break.

Mary, how long do you plan on staying cross with me? Just forgive me.