Bert,
if you can't think of an explanation within Newtonian Physics that doesn't mean there is no rational explanation within, let's say, psychology or physiology. For instance, I know of a person who can tell after hearing a few words if another person has had any training in singing and whether that training is recent or dates back. That's a feat I cannot replicate at all but he assures that this is just his expertise.
Some people can do astonishing things beyond normal abilities (some of them even don't know themselves how they do it) but not beyond rational explanation.
For me the safest approach is to say "don't know". Even if I can't think of a scientific explanation there might be one.
And regarding your friend, my 'explanation' above is just a wild guess. Possible, yes, with the present state of my knowledge, but I wouldn't bet upon it. There are many others and only one is that the laws of nature do not hold in this case.

Wolfgang