哎呀瞧我这记性 “瞧我这烂记性”用英语怎么说

Oh, it's nearly slipped my mind.
哦，我差点忘了！
Now where was I?
我说到哪儿了？
Sorry, my mind's gone blank.
对不起 ， 我的记忆一片空白 。
I have no recollection of meeting him.
我不记得见过他 。
I can't really recall.
我真的想不起来了 。
I've completely forgotten.
我彻底忘记了 。
I do have a memory like a sieve.
我记性特别不好 。
What was I thinking of?
我当时是怎么想的？