chasinghosts : My sister and I are 11 months apart and we heard the Irish Twins thing often. It wasn't until we were in our late teens that we learned it was actually an insult.😅 Haven't heard that term in forever!
@brightlights : We've never thought of it as an insult, even though it is directly about being close together. My Dad and Aunt were 1 yr and a day apart, so we always heard the term. I guess some thought it was insulting, just like saying Bless your heart I guess.