Irish twin (plural Irish twins) (rare, slang, offensive) Either of a pair of siblings born less than 12 months apart, especially if born within the same calendar year or school year or born one year apart.
Today we celebrated the babies birthdays. My tiny littles turned 1 and 2 so we celebrated it with a small party with close family and friends. It was honestly close to perfect and I don't say that often so that really means something. I loved *almost* every moment.