I work in a very male dominated industry, (setting up conventions in Las Vegas). My biggest pet peeve is when a dude insists on helping when you don't need it. So, I'm laying carpet over several cords that have been ran to power various things in the clients booth. As you roll out the carpet and you come to a cord, you cut a little t in your carpet and pull the cord through. I'm doing this and I'm in a hurry, and some guy gets down in front of me, to "help" of course, and puts his hand right in the way so I can't see what I'm doing. Without thinking I quickly pick his hand up, move it back out of the way, and then I set it back down and went back to what I was doing.
He got really offended because in my rush I didn't realize I had just moved it like it was an inanimate object and didn't say anything to him.