It's not actually about a unicorn, though, hahaha.
My god man, what's it about then? I'm piqued!
The Irish Rovers?
A Duocorn that needs an operation?
Eunuchs? a eunuch with a bad sense of humour?
Spies? spies that are eunuchs?
an Irish leper?
a tiger in a boat with an Irish leper?
Be careful if it's a pop-up book.