@bigfan321
Oh don't worry you weren't really creepy, just that nobody has ever really messaged me on my message board before.But no worries. Also can other people see this?
And it means that fools would not differ in their thinking, the same way great minds think alike. It's just another part of the phrase that I guess is just meant to add a bit of humour to it. So when my mom says it she's implying that we (me and the person who thought the same thing) are fools. But of course she is joking!