No, you couldn’t think of a reasonable explanation. That’s not to say that you’re thick. Hell, it took Ben Franklin to come up with a reasonable explanation of lightining.
I think you’ve made the mistake of shifting the burden of proof. To conclude that it was a psychic experience, you need to prove that it was a psychic experience. Merely showing that the set of reasonable explanations that you can come up with doesn’t work only establishes that something happened that you can’t explain. No sin there.
As to the OP, the brain is a use-it-or-lose-it operation. Aside from death, the most brain cells you’re going to lose will be during early childhood. That’s when your brain pathways are culled and reinforced. If we had psychic powers, then there would be psychic organs in the brain. But if we don’t use an extant organ, it either atrophies and dies, or it is taken over by some other function. For example, if you tie an ape’s arm to its body so that it cannot use it, the neurons that go to controlling that arm get called to another function and are no longer really associated with that arm. If we had a psychic organ in our brains, but we only had psychic experiences once in a great while, then the organ would either die or be used up by some other function.
To put it another way, psychic powers would have huge survival advantages. If psychic what’sits were extant, and if we could detect them, then our powers of perception would be very strong–like sight, hearing, and touch. Of course, there are alot of things we can’t detect, e.g. UV radiation & the Earth’s magnetic polarity, so an inability to detect psychic what’sits doesn’t prove that they don’t exist. However, the fact that we don’t have a well defined and universal psychic sense constitutes pretty clear evidence that humans wholly lack any psychic ability.