How many times have you said any of these things? 

“I have no ideas”?

“My mind has gone blank”

My personal favourite is: “I just can’t think of anything to say”.

I call it Blank Page Syndrome (so do other people—I didn’t invent the term).

It really annoys me when people say “I have no ideas”. It shouldn’t annoy me I _know_, but it does. It annoys me even more when I say it _to myself_.

Why does it annoy me more than the last season of Game of Thrones?

The simplest reason is: you saying “I have no ideas” isn’t true. 

It’s never true.