Strange how Oribe couldn't laugh at Mitsunari, this seems to fit perfectly with his explanation in front of the twisted statue, about trying so hard it becomes comical.
@boldmonkey I think the difference here is that the statue wasn't trying to be funny, it was trying too hard to be serious--which made it unintentionally funny. Meanwhile Mitsunari is trying too hard to be funny, which in turn has the opposite effect.