Scenario:
A woman was going to have an interview with a reporter about her cook book. She was very nervous. When her son came in, she said, "Andrew, you look sharp."
Her son said, "I won't tell the reporter I am a gay."
The woman reponded with a relieved expression, "Check and check."
...
Question:
What does "check and check" mean? Is it a very usual expression? Thanks!
