Trail (one's) coat verb phrase
If you trail your coat, you invite or incite a quarrel or an argument by acting in a provocative way.
She is trailing her coat with provocative comments
He trailed his coat by saying offensive words.
When an argument or a fight occurs, both parties involved are responsible for it.
To fight in a fierce and brave way
To cause an argument or a fight
The verb “trail” should be conjugated according to its tense.
This behavior was traditionally associated with Irishmen at Donnybrook Fair, an annual fair once held in Dublin's suburb. Charlotte M. Yonge, in the novel Womankind ( 1877 ), alludes to this association: ‘Party spirit is equally ready to give offense and to watch for it. It will trail its coat like the Irishman in the fair.’