Over dinner at a bachelorette party:
Woman 1: Well you know, before you’re twenty-five you only have a 25 percent chance of conceiving every time you have sex. Then that drops to 15 percent after twenty-five.
Woman 2: Only a 10 percent drop? I’d think it would be more.
Woman 1: Well, there are only a few days a month when you can get pregnant at all, so we have our little calendar and we figure out the days.
Woman 3: You know, you can just get a Basal thermometer, and it measures when you’ll be most fertile.
Woman 4: Best bachelorette party conversation ever.