I know this is a "no post" meme thread but....
If you received the jolt across the chest, you need to stay acutely aware of any feeling of lightheadedness or the like.
I've been zapped so many times by 120 volt that it doesn't bother me much any more. 277 volt is an entirely different animal, the effects for a solid zap could last years. If you experience a tightness or lightheadedness of the chest or heart, call 911 or head for the hospital. Just a heads up.
Been there, done that.