Meaning:

Twenty-four hours a day, seven days a week.

This idiom means you do something all the time.

2. (a rising tide that) lifts all boats - something that helps all people or all groups
Example: "We're only number three, but the current economic growth will lift all boats, so we're sure to make a profit this year."

English expressions using the word mouth.

Now, the VOA Special English program, Words and Their Stories.

(MUSIC)

People use their mouths for many things. They eat, talk, shout and sing.  They smile and they kiss.  In the English language, there are many expressions using the word mouth. But some of them are not so nice.