I had a Family-Oriented Sim once who, almost immediately after getting married, got the Want to have a baby with her husband. The next day, the Want rolled to Have First Baby. A few still-not-pregnant days later, she rolled Have a Baby, with no specific sim listed for with. I figured the poor thing was hearing her pixelized biological clock ticking, and by this point, didn't care who the father was.
See, that's the point where I'd be wanting to lock all 3 wants, get her pg asap and score megga points when the baby arrived. But then, I'm a shameless point farmer in this game.
Of course I did! It was wonderful; when she actually got pregnant, she rolled Have a Boy, which a few apples ensured. Ended up with around 12,000LTP's, I believe. However, the inability to lock any other wishes in the few days between conception and birth sucked. Thank the Gods for AM's Fulfill Unlocked wishes option now.