It's happened here in Australia a few times, and a couple of people weren't so lucky.
I almost witnessed a possible Darwin, changing ends on a train at a station, I heard a sounds like a gutter overflowing on to the platform. I look up an there is a guy taking a slash from the overhead bridge, with his mate cheering him on. I yelled up at him "Good on you!" and then said his "stream" was less than a meter from a 1500 Volt overhead. The "stream" stopped suddenly!
There was a case of someone who did "cross streams" with the overhead. He lived, but has no sex life or bladder control.....