Poem: At What Point Does A Shakespeare Say

At what point does a Shakespeare say I feel it's time I write a play What subject shall it be today A tragedy I've done Lovers twain have been united Audiences are delighted No doubt I shall soon be knighted Royal fame I've won The Queen has come to every show And, flattering, she feigns to know A couplet from a verse, also A refrain from a rhyme But the ones I aim to pleaseth Most of all upon my kneeseth Are the folk who cough and sneezeth Through my prose sublime