When 2 people are walking towards each other, and when trying to get out of the way of one another, move in the same direction, blocking each other once again. This continues until one person stops and or finally moves around the other person. Sometimes can be a humorous action, other times just unnecessary BS you don't need in your day.
Tim and James walked towards each other and did the," Walking Encounter Dance." After getting in each others way a few more times, they laughed and finally sorted it out.