So this happened in high school but has stuck with me to this day.   
I was part of a student leadership group and we were supposed to be going class to class and asking people for their suggestions on improving the school. We led these discussions in groups of three. In high school, I was a small, nerdy girl. My two teammates were a pre-military dude and a defensive lineman.

In one class there was this guy who kept giving obviously trolling suggestions (ex. gatorade in the water fountains) and he was shouting them out, talking over people with actual suggestions. I politely asked him to wait. He kept doing it. I asked him again, a little less politely. He kept going. I said "Dude, stop it. Other people have ideas too." He didn't stop until one of my team members finally asked him to knock it off. 

After we left the room, my two team members pulled me aside and told me that I was being way too aggressive.