Ditty

Some 40 years ago The Muse visited me and left me with the following:-

My eyes have seen the glory of the Purple Emperor,
He was flying round an oak tree that was very very tall,
He got pestered by a hairstreak that was very very small,
So he.................................................................................. .

Unfortunately, or perhaps mercifully, The Muse departed before I managed to finish the thing.  Do feel free to complete it...