It was the worst mass shooting in U.S. history, and now we know exactly how it happened.
[Image via AP Images.]
OMG! Watch where you're going, dude!
Considering this guy fell onto a Philadelphia subway track while distracted by a cell phone conversation, we won't call him lucky, but he's pretty damn fortunate that a train wasn't coming!
Watch this footage (above) that reminds us why it's always important to be aware of our surroundings when chit-chatting on a cell phone!
Although the incident happened last year, the video was released as part of an effort to raise awareness for the risks of distracted walking.
We wouldn't be surprised if this guy hasn't even looked at his cell phone in a subway since taking this potentially deadly tumble.
It's called learning from your whoopsies!