It is interesting that it's considered a derogatory remark. I can see why. But mil says it all the time and she is Irish. She had 4 kids in 4 years. My dh is the oldest, 12 mos 2 weeks older than his sister, then she is 10mos 3 1/2 weeks older than his bro, and he is 11 mos 2 weeks older than the "baby". My mil says she has Irish triplets, almost quads!