A protective barrier with rails that is worn or set up to prevent a
retard from injurying himself or anyone around him. Comparable to the
bubble boy suit or also a fence for cattle
Person 1: Bobby just ran into that
lady!
Person 2: It's all good, Bobby was wearing his tardrail
Person 1: Was it padded?
Person 2:
No shit it was padded! That's why its a tardrail!