Thou... Vain Beef-witted Flirt-gill
Parts of what makes up this insult can be found in "Richard II" spoken by "BAGOT":

This insult has been seen 2 times on this site. The first time was on Monday, May 16th, 2022No; I will to Ireland to his majesty.
Farewell: if heart's presages be not vain,
We three here art that ne'er shall meet again.

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!