What is Tressling?
1.
For thrill-seekers, climbing to the underside of a railroad bridge or standing near traintracks as a train passes. Don't get too close because there's a vacuum that can pull you into the train. As soon as the wind starts becoming strong enough to sway you at all pull back immediately.
Shown in 2009 film Sunshine Cleaning (2009), one of the main characters goes tressling, climbing to the underside of a railroad bridge as a train went by overhead, sending huge amounts of noise and sparks down on her.
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