Thanks to Smoke
This happened to me in Year 2000. I was a pillion rider heading for “Highway 1″ on a motorcycle with a friend of mine. We missed the “Highway 1″ entrance along XYZ Road so we went straight and headed to “Highway 2″ d instead (towards the city direction).
As we travelled down a mild slope at “Highway 2″, I felt a strange force trying to pull my helmet off my head. My head was jerked all the way back and I had to use my hand to hold the helmet down. There was no strong wind and my visor was DOWN and I shouted to my friend to go slower. He surprised me by shouting at me to stop pushing his head down.
Initially, I had an explanation for this: When we were going down the slope, my head was pushing his down so he was trying to push his head up, therefore causing the contradicting forces.
However, when I sat straight up, I could see his head still bent down and shouting at me to stop pushing his head!!! At that same time, where I could see that we had no head-contact, the force was again trying to pull my helmet off!!! It was a pulling force from the back and not a pushing force from the front!!! I was so worried I started chanting some prayers and the feeling automatically stopped. When I stopped chanting, the feeling started again so I eagerly continued chanting. It was only when we were out of “Highway 2″ then did the feeling of being pulled stopped.