A Startling Revelation

The Guild is all aware of Ryu's inability to do humour in fiction. Oh he knows what it is of course, and no offence to him of course.

But the thereputic realization of just how everything works out is beyond me.

http://www.penny-arcade.com/comic/2006/03/22

This is pretty much the best analogy we have for this scenario I dub "Humour Blind".