4 points
the joke was in reference to the irish potato famine which was caused by the uk subsidising the export of food in ireland so potatoes were literally the only thing they were able to eat because the british would force them to hand over everything else
-3 points
*
3 points
By using the concepts “potato” and “Irish”
The only reason those concepts are linked is because potato was the emergency food during the period during which England was trying to kill all Irish people