hbbfam doesn't get it

Someone can explain this one?

So its not really Mona or Keith. Too confusing

Perhaps he is merely "partially sighted"

OK I give. What am I missing?

I am really obtuse today. What's significance of Feb 15?

?

Hay, I talk in simplified language. I don't know anyone who don't.

We just watched Life of Brian last night.

It could be raining.

These mandatory sentences are just wrong.