I don't make a good girl

What is thread count?  What is a good thread count? 

These are things that I have no clue about.  I was window shopping for Luxury bed linens today because our bedroom linens are about ten years old but I don't understand about thread count, different cottons, etc.

I don't think I make a very good girl.  I'm clueless when it comes to things like this (and sewing, cooking, and cleaning).  Wow, what a wife I am!