An unrequested act of kindness from a party in one group towards a party in an opposing group with no expectation of reciprocation. Named for a speach by Ben Sass where he said "you can't hate a guy that shovels your driveway".

Term first seen used in an LA Times article by Virginia Heffernan.

A portmanteau of carpe diem, a Latin phrase that means “Seize the Day!” and DM, which stands for Direct Messages. This word means seizing the day via DMs.