Puttachi's Odd-one-out Paradox

This is what I'm going to call Puttachi's Odd-one-out Paradox.



Question: There is a blue circle, a red square and a blue square. Which is the odd one out?

The blue circle can be the odd-one-out because the other two are squares.
The red square can be the odd-one-out because the other two are blue.
So, the blue square is the only one that cannot logically be the odd-one-out.
So, that makes the blue square the odd-one-out.
But that means the blue square
 is not the odd-one-out any longer!

I swear I have no idea how she comes up with these things.