Thou... Mewling Fen-sucked 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 Thursday, February 1st, 2024And 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 10649 insults have been uniquely generated 11152 times, with a total of 125000 (or 50 to the third power) insults available in the system!