Thou... Vain Dread-bolted Wagtail
Parts of what makes up this insult can be found in "Alls well that ends well" spoken by "HELENA":

This insult has been seen 1 time on this site. This was on Sunday, May 21st, 2017Yet never know how that desert should be.
I know I love in vain, strive against hope;
Yet in this captious and intenible sieve

A total of 10472 insults have been uniquely generated 10953 times, with a total of 125000 (or 50 to the third power) insults available in the system!