Bratton and his companions followed to make sure the two did not cause a ruckus on the platform.
It was consensual, that is, to all but her boyfriend and his wife, who eventually compared notes and created a ruckus.
To hear ruckus soliloquize is to be a fly on the wall in a country club locker room.
A disturbance; uproar; brawl; rumpus
[1890+; perhaps fr ruction plus rumpus]