Male answer syndrome(MAS) is the tendency for some men to answer a question even when they don't know the answer.
Try an experiment. Ask a male friend a question, something completely outside his sphere of expertise.
Will you get an answer? Chances are, you will. The male friend is exhibiting behavior known as Male Answer Syndrome. It's the compulsion by many individuals (mostly men, but sometimes women) to answer questions readily, regardless of knowledge.