Rollerdolt
Person who has a suitcase on wheels who; 1. Overloads the suitcase requiring the jaws of life to insert it into the overhead compartment. 2. Blocks both the moving walkway and escalator prohibiting faster traffic from moving ahead. 3. Weaves back and forth blindly in the terminal without regard for other people.
I missed my plane because a rollerdolt was blocking the escalator.

The plane was late due to 37 rollerdolts trying to wedge their bags into the overhead compartment.