"Ha ha ha, we all fall down"
The experience I'll mention here happened when I was in college (back, oh, in the stone age).
I was at a worship session for a training conference for campus small group leaders, and my best friend and I were standing in a circle with others holding hands.
He couldn't sing worth a darn, but he was sure loud. He also had a "charismatic" background (as opposed to me, a mangy Lutheran/Methodist/Baptist mutt of some sort). He did not have experiences like most charismatics (none of the weekly "Spirit mania" things), but he was open to it.
As I held his hand, I felt what seemed to be an electric current flowing from him to me, it was one of the oddest things I think I've ever felt. I had no clue what to make of it, I just being puzzled -- "What's THIS?" I thought to myself.
And about five seconds later, he just fell on the ground.
Somehow I kept a grip on his hand, although it was a stretch.
He started to laugh quietly. Not an insane titter, nothing weird, just one of those full, good, completely healthy and honest, gently joyous laughs. He kept laughing to himself, a huge beautific smile on his face.
I was a little freaked. I'd never been at ground zero before with these things, and part of me was like, "Is he okay?" and part of me was like, "Is this all fake?" and part of me is like, "Whoa, what IS this?" I kept a good grip on his hand, though, trying to pick up what vibes I could. It was crazy.
A few of the leaders (adults) were concerned. One lady came over and knelt next to him, they were trying to figure out what to do with him... and at one point she said, "You need to stop it, you're scaring people."
If I had been the "me" I am now, I would have snapped at her for that... since he wasn't actually making much fuss, and it was clear he wasn't choosing consciously to do it, and who was she to try to box up what was happening?
But back then, I just kept my thoughts to myself... and a good grip on his hand. I had no idea what was going on, but I wasn't about to let him go into it alone.
He finally was able to get up after 5-10 minutes, but he was as loose and shaky as if he had spent an hour in a hot tub. And he was very very peaceful and happy.
He didn't know how to explain it either... and he might have only ever had one or two other similar experiences in his whole life. (So it's not like he was one to make this happen to himself every week. If it happened, it happened TO him or on some subconscious level... not because he consciously was making it happen.)