When the path of a man and woman are going to cross, it’s always the woman who’s expected to alter her path to avoid a collision. In addition, women restrict their stride as compared to men, and tend to hunch their shoulders and not initiate or maintain eye contact.
So I did this research my friends and I started messing around with this. We found that if you don’t alter your path when walking toward a man, a lot of men will almost run right into you, or bump their shoulder against yours, and then turn and give you this weird look. The weird looks you get are increased if you stand up straight with squared shoulders and take longer strides. I habitually walk this way now, and I continue to get puzzled looks by men who turn around after I pass them and watch me with an uncertain look.