U for Unicorn part 1

On and on the little boy walked, and came upon a beast.
It looked a bit like a horse, and was unhappy, to say the least.

‘Oh’, the little boy said, ‘Don’t be sad, whatever can be wrong?’
‘I’ve got no friends’, the animal said. ‘They all laugh at my stupid prong.’

‘I’m not a horse, I’m not a donkey. Or a pony, or a mule.
‘Nobody wants to play with me, and I hate going to school!’

‘I want to know my name, to find out exactly what I am.’
‘Join the club’, the little boy said. ‘I’m in exactly the same jam.’