I occasionally borrow pot from my kids. They do a little weed occasionally. 'Here, Dad' — or more likely, 'Dad, have you got any?'
So many times each day we support each other informally without ever becoming 'helper' or 'helped. ' Perhaps we're finding an article of clothing for a partner, cutting bread for one of the children, collecting the mail for the person at the next desk, holding the coat for someone at a restaurant.