I was thinking to myself, how an English native speaker might act when goes blank about something that was about to say?
Take this conversation as an example:
Eric: Did you notice what happened when you came to the class?
Tim: Nah, I have no idea.
Eric: uh...er... it just slipped my mind... er ...[here's the action, when he's trying to remember but nothing comes up]
Obviously it's a hypothetical situation, but I want to know what kind of actions might be taken by Eric and what additional things he might say when he keeps trying to remember but he still doesn't?