I don’t know too much about that - You're making up excuses for why you’re clueless and it's no

You're making up excuses for why you’re clueless and it's not working

I don’t know too much about that. My brain is on vacation.

I don’t know too much about that. I was hit by a truck last week.

I don’t know too much about that. I'm still figuring out how to use my phone.