I was the same way. Only my dad phrased it this way:

I don’t know how someone so smart can be so stupid.

I like your mom’s way better.

I still don’t know what I want to be when I grow up, but I know I want it to be spelled right and punctuated correctly. I guess that’s something.

I still don’t know what I want to be when I grow up, but I know I want it to be spelled right and punctuated correctly. I guess that’s something.