Thou... Vain Doghearted Skainsmate
Parts of what makes up this insult can be found in "Henry VI Part 1" spoken by "YORK":

This insult has been seen 2 times on this site. The first time was on Monday, November 19th, 2018Strumpet, thy words condemn thy brat and thee:
Use no entreaty, for it is in vain.
Then lead me hence; with whom I leave my curse:

A total of 10308 insults have been uniquely generated 10778 times, with a total of 125000 (or 50 to the third power) insults available in the system!