Big mouth

A man opens a camel's mouth wide at a camel fair in Pushkar in India. Photo: Roberto Schmidt / AFP

f you 'are a big mouth' or 'have a big mouth' it means you talk too much, especially about things which should be kept secret or avoided.

For example:

Fran's got such a big mouth. She's been telling everyone that I'm engaged. I wanted to tell them myself.

Oh no, me and my big mouth! I made Alex feel upset when I mentioned his dead cat. 

Don't be such a big mouth. You should learn to keep other people's problems to yourself.

Don't confuse it with:

To bad-mouth. If you 'bad-mouth' someone it means you say negative things about them behind their back.

She's always bad-mouthing her friends. I really don't like it.

Interesting fact:

Thousands of camels are traded each November at the Pushkar Camel Fair in Rajasthan in India. Buyers always check a camel's teeth, as good teeth are a sign of good health.