acting, performing, or participating together side-by-side

to rise to action with a determined shake of the arms

to roll up one's sleeves for action

To shake one's sleeves and rise up; to be moved to take immediate action with excitement or determination.

to walk with the hands in one's sleeves or swinging the sleeves

to leave each other or part company

to have an intimate friendship

(of two people) to separate or part ways