Thou... Vain Flap-mouthed Gudgeon
Parts of what makes up this insult can be found in "A Comedy of Errors" spoken by "LUCIANA":

This insult has been seen 2 times on this site. The first time was on Friday, April 27th, 2018Comfort my sister, cheer her, call her wife:
'Tis holy sport to be a little vain,
When the sweet breath of flattery conquers strife.

A total of 10432 insults have been uniquely generated 10911 times, with a total of 125000 (or 50 to the third power) insults available in the system!