I was challenged by Pest n.1 that I could not climb the wall. 'But darling, I climb the walls all the time!', I said sweetly. My Imaginary Friend giggled. He giggled even louder when I could not work out the mighty physics laws of the tobogganing chair. I did shake my head sadly, at the bottom of the slope, but he came over and helped me up. 'I love you even more when you are silly', he whispered in my ear.

Anyway, I cannot bear to ignore a challenge. Daring me is like waving a red rag to a bull. And bull I am, being a Taurean. So, I climbed the wall. I have photos to prove it. They are not particularly charming proofs, and the helmet and straps don't do much to enhance your looks, but none of other adults scored any better. Pest n.1, however, squirrelled up to the top and rang the big bell in no time. He wanted to impress a little girl who was climbing with him.

I found the 13-metre high tower no trouble to climb but coming down... was another matter. My Imaginary Friend was whooping with laughter.

'You bloody well come up and do it', I hissed through gritted teeth.

'No way. I stay down here to catch you when you free-fall. You are doing well', he shouted encouragingly from what looked like two miles below my feet.

That's what he does best. My Imaginary Friend will catch me. I know I am safe.

rock climbing rock climbing 2