Still can’t beat the exchange of insults on the floor of parliament between John Montague, Earl of Sandwich and John Wilkes:
(Montagu) “Egad sir, I do not know whether you will die on the gallows or of the pox (venereal disease).”
(Wilkes) “That will depend, my Lord, on whether I embrace your principles or your mistress.”
One of the all-time greatest retorts.