The idiom "de facto" means "in practice or actuality" or "in effect, although not officially recognized." It refers to a situation where something is happening or being done even though it may not be legally binding or official.

The idiom "keen as mustard" is used to describe someone who is very eager or enthusiastic about something. It can also refer to a person who is skilled or capable of doing something well.

The idiom "blue-collar" refers to a person who works in physical labor or manual occupation, typically characterized by wearing blue-colored clothing.

The idiom "bad egg" is used to describe someone who behaves in a way that is dishonest, untrustworthy or generally unpleasant. This person may be seen as unreliable and may have a tendency to cause trouble for others.

The idiom "tar with the same brush" means to treat someone or something unfairly or arbitrarily, without regard for their individual qualities or circumstances. It is a way of saying that two people or things are being judged or treated as if they are the same.