['I forgot what I was saying during my speech at work.', 'Oh no, that is embarrassing.  Were you able to recover by the end?', 'No, I felt so humiliated.', 'I am so sorry that happened to you.  Will you get another crack at it sometime?', 'No, not for a while.']
I'm sorry.
I forgot what I was saying during my speech at work.  I felt so humiliated.