history: Last week I missed class because I was hungover, I needed to attend that class to pass. I failed. I slept through a really important class because I was hungover and I failed because of it. I should've behaved better. That's unfortunate. But at least you learned from the experience_comma_ right?
current: I sure did. I am just embarrassed that I did that, I am not usually that way. It was out of character for me.
next: No need to feel ashamed. We all make mistakes and at least you learned your lesson.