Thou... Vain Elf-skinned Flap-dragon
Parts of what makes up this insult can be found in "Richard II" spoken by "KING RICHARD II":

This insult has been seen 1 time on this site. This was on Sunday, June 23rd, 2024Thoughts tending to ambition, they do plot
Unlikely wonders; how these vain weak nails
May tear a passage through the flinty ribs

A total of 10558 insults have been uniquely generated 11048 times, with a total of 125000 (or 50 to the third power) insults available in the system!