Built for the Stone Age - part five: Lekking

Have you ever wondered why women so often pretend to be stupid especially on(?) social gatherings, when men are around. I don't believe it. Why do I always find(?) myself doing that? When am I going to get that into my head that I'm qualified! I've got a good job, I manage over 300 workers, for goodness sake! And(?) then, in front of him ???