This phenomenon happens to me several times a week and I've actually just recently started pondering if this situation has a defined term for it?
When two people walk towards each other in opposite directions, and they need to quickly decide whether to walk on the right or left side of each other, oftentimes failing to do so when both decide on the same direction, and then switching and causing an awkward situation to occur between you and the stranger. It probably has happened to anyone of you. What is this called?