Poets were better at insults a few centuries ago. In Scotland there was a tradition of "flyting", a kind of duellling with insulting verses.
Here is a chunk from William Dunbar (c1460 -1520) "The Flyting of Dunbar and Kennedy", a long tirade of abuse written by William Dunbar directed at his poetic rival Walter Kennedy. Kennedy replied in similar vein.
A translation is below!
Mauch-muttoun, byt buttoun, peilit gluttoun, air to Hilhous,
Rank beggar, ostir-dregar, flay-fleggar in the flet,
Chittirlilling, ruch rilling, lik-schilling in the milhous,
Baird rehatour, theif of nator, flas tratour, feyindis gett,
Filling of tauch, rak-sauch – cry-crauch, thow art oursett!
Muttoun-dryver, girnall-ryver, yadswyvar – fowll fell the!
Herretyk, lunatyk, purspyk, carlingis pet,
Rottin crok, dirtin dok – cry cok, or I sall quell the!
Maggoty mutton, button biter, bankrupt glutton, heir to Hillhouse
Foul beggar, oyster-dredger, flea-frightener in the hallway
Chitterlilling, rough boot, greedy scavenger in the millhouse
Abominable poet, thief by nature, false traitor, born of a fiend
Lump of grease, gallows bird - give up, you are beaten!
Sheep-driver, grain-thief, horse-shagger – a curse on you!
Heretic, lunatic, pick-pocket, old hag’s fart,
Rotten old ewe, filthy arse – give up or I shall knock you down!