"Male Answer Syndrome" (MAS) is the tendency among men to give answers to questions whether they know anything about the subject or not, particularly when in the presence of women.
Psychologists tell us it's a form of "male display behavior" and is a subtle method of attracting females. "Men have the courage and inventiveness to try to explain the inexplicable." A man may even start to believe his own baloney. This might account, in part, for the disproportionate number of men over women actively successful in the arts.