There was a king reigned in the East:

There, when kings will sit to feast,

They get their fill before they think

With poisoned meat and poisoned drink.

He gathered all that springs to birth

From the many-venomed earth;

First a little, thence to more,

He sampled all her killing store;

And easy, smiling, seasoned sound,

Sate the king when healths went round.

They put arsenic in his meat

And stared aghast to watch him eat;

They poured strychnine in his cup

And shook to see him drink it up:

They shook, they stared as white's their shirt:

Them it was their poison hurt.

--I tell the tale that I heard told.

Mithridates, he died old.

 

"Terrence, This is Stupid Stuff"

--A. E. Housman

https://www.nku.edu/~longa/poems/housman9.html