I don't have to worry about sounding autistic here because everyone is. So, when you meet people and they hear that you do maths/physics/whatever, if they say shit like oh wow you must be so smart, what do you say?

If you try to be humble it comes across as self depreciating or even insulting to them, but you can't go haha yes I am without being a sperg too. Thank your teachers? But then you sound like a privaleged posh twat.