It is good that you noticed. But it's a funny paradox.
Maybe he's tilting his head slightly to the side? Surely he can't keep track of that beard all the time!
Naw, I screwed up.
Don't underestimate the beard. It goes where it wants go, whether you like it or not. ;)
We'll never know how many of the world's most renowned pieces of art were unintentional ;)