Thou... Unmuzzled Half-faced Lout
Parts of what makes up this insult can be found in "Richard III" spoken by "GLOUCESTER":

This insult has been seen 1 time on this site. This was on Monday, March 30th, 2020And with thy scorns drew'st rivers from his eyes,
And then, to dry them, gavest the duke a clout
Steep'd in the faultless blood of pretty Rutland--

A total of 10496 insults have been uniquely generated 10981 times, with a total of 125000 (or 50 to the third power) insults available in the system!