Any fool might have guessed that Trump's comb-over/comb-across/comb-under/comb-back/whatever-the-hell-it-is was hiding some serious bald patches - but you could never have imagined just how bald the POTUS really is.

A clip of Trump boarding Air Force One the other day has gone viral, as an errant gust of wind caught him at just the right moment and reveal a seriously strange truth.

Basically, he's completely bald on the back of his head, which is highly unusual and which a lot of people have theories for (see below).

Others have just enjoyed the fact that he must be absolutely hating the attention this is getting.

Not that there's anything at all wrong with being bald, of course - but why bother hiding it to that extent?

See for yourself below: