At breakfast...eating oatmeal

Me:So what do you think they call this (motioning to the food) in Ireland?* 

Jon: "Dinner"

* I don't know why, but at this point I am thinking Jon might know the Irish word for oatmeal. This question is the product of a 20th Century Irish Lit class. How Jon would know Gaelic, I don't know, but every question is worth asking, right? Yeah, didn't think so. Regardless, his answer made me laugh!