You are definitely overthinking it. Any blank you don't want to fill, feel free to be vague. Also, keep in mind, the expectations you think they might have of you is probably not something they are even thinking of. It's just like that embarrassing thing you did that you remember and no one else does. The expectations you think they had of you are probably something you remember and they don't. Realistically, 16 year-olds very rarely turn into the person they or anyone else actually expects.
I don't know 16 year old you. I don't think I'd really know me from 20 years ago, either. You're a good person, just roll with that.
If you think the heat is dry, imagine how we like our humor.