I get this a lot because I'm a natural fast walker I tend to get to the door first so I open it for whoever is behind me. More often than not men will insist I go first.
It's mildly irritating in that, "do you want a cookie?" kind of way because hands down, they are usually expecting some kind of recognition of their gender performance. And I just. don't. care.
But I don't go off on the guy unless he goes off on me. Which had happened.