A crowded subway train packed like a can of sardines—just the thought of it feels suffocating.

Even so, is this really acceptable?

An absurd subway passenger has been captured in the United States.

A man is seen precariously hanging onto the rear exterior of a moving subway train.

Without any safety gear, it looks almost like a stunt from a movie.

This footage was captured in Philadelphia, USA.

The man reportedly clung to the end of the running train as it emerged from a tunnel, riding it all the way into the middle of downtown.

This kind of reckless behavior carries a severe risk of electrocution.

Police are currently tracking down the man's identity based on the video.

(Video Source: Instagram @qblizz_215)