I think it's appropriate to say that the men are having babies. Couples have babies...
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I think I loved my late DH even more when I heard him tell a friend that "We are having a baby." Not "My wife" but "WE".
That really does show that he knows it is a team effort, and he was with me through thick and thin...or was it "well muscled and then THICK?"
-------Oh, just saw the baby's name on one of them. I love it, flowers are strong names in my family.