“How many potatoes does it take to kill an Irishman?”/“None.”

Ireland is known for potatoes, and there is a politically incorrect joke:
 
Q: How many potatoes does it take to kill an Irishman?
A: None.
 
The question leads one to believe that an Irishman can consume a large number of potatoes, but the answer—“none”—brings reminders of the Great Hunger (or Irish Potato Famine) between 1845 and 1852. The joke (cited since at least 2008) has been printed on many images.
     
 
Wikipedia: Great Famine (Ireland)
The Great Famine (Irish: an Gorta Mór, [anˠ ˈgɔɾˠt̪ˠa mˠoːɾˠ]) or the Great Hunger was a period of mass starvation, disease, and emigration in Ireland between 1845 and 1852. It is sometimes referred to, mostly outside Ireland, as the Irish Potato Famine, because about two-fifths of the population was solely reliant on this cheap crop for a number of historical reasons. During the famine, approximately 1 million people died and a million more emigrated from Ireland, causing the island’s population to fall by between 20% and 25%.
     
Dry County
BeExcellent
01-21-2008, 12:37 PM
Q: How many potatoes does it take to kill an Irishman?
A: None. .
     
aberdeen-music
Dan G
Posted 21 May 2008
(...)
overs_spit said:
how many potatoes does it take to kill an irish man?
none
 
The potato famine caused thousands of deaths amongst irish families.
 
Twitter
John Werner
‏@John746
How many potatoes does it take to kill an Irish man? None.
5:46 PM - 9 Sep 2009
 
Twitter
Colin Larson
‏@Colin_Larson
How many potatoes does it take to kill an irishman? None.
2:21 PM - 24 Sep 2009
 
reddit
How many potatoes does it take to kill an Irishman? (self.MeanJokes)
submitted April 3, 2013 by Hoops42
None
 
reddit
How many potatoes does it take to kill an Irish man?
submitted April 29, 2014 by elmuchocapitano
None
 
reddit
How many potatoes does it take to kill an Irishman?
submitted May 13, 2016 by tsukie0
None.