Thou... Craven Swag-bellied Barnacle
Parts of what makes up this insult can be found in "Henry VI Part 1" spoken by "PLANTAGENET":

This insult has been seen 1 time on this site. This was on Wednesday, October 16th, 2019He bears him on the place's privilege,
Or durst not, for his craven heart, say thus.
By him that made me, I'll maintain my words

A total of 10497 insults have been uniquely generated 10982 times, with a total of 125000 (or 50 to the third power) insults available in the system!