There aren't many expressions that look funnier than a half-sneeze either.

I've always wondered about people suddenly experiencing a sneeze while engaging in stealthy spywork, surveillance, that type of thing. It could really wreak havoc with a carefully planned mission of that sort.

Or what about the guy who sneezes while making that delicate little adjustment on the H-bomb detonator's safety device...

And what if William Tell had sneezed when firing the famous arrow?