Short of an insult?
Luther’s got you covered. H/t Nora.
Check out the “Lutheran Insulter” here” http://ergofabulous.org/luther/?.
A seven-year-old child, indeed, a silly fool, can figure it out on his fingers – although you, stupid ass, cannot understand anything.
From Against Hanswurst, pg. 221 of Luther’s Works, Vol. 41
DISPORTING 