Arrgh

What a lousy day.
I always hate it when I cannot feel the connection between the questions and my thought processes and it happened this morning.
I should have done a quick run through before lesson or last night but unforseen factors came up. It is not that I was unprepared - I did all the stuff on Saturday but the memories of that day faded like an image blurred after 4 days of gongxi gongxi.
Arrrghh. I failed to feel my punchline of the day.