BallFiend's strange words

Upon waking up this morning, BallFiend announced: "I saw a fairy." When asked what colour was it, he replied "It was a green fairy."

And at lunchtime, "Don't put your elbows on your words mum." (I was reading the newspaper, with my elbow on the paper and my chin resting in my hand).

Some that he has been using for ages now:

• the toy library is referred to as the "library toilet" (with toilet pronounced 'terlit');
• a butterfly is a "fly-die"