Pregnant women are taking the selfie craze to a new level by posting pictures of their 12-week scan online for friends to predict the sex.

A poll by parenting site Netmums found a third of British parents had uploaded scans to social media sites like Twitter and Facebook for other users to guess whether their baby will be a boy or a girl.

A further fifth put pictures on parenting sites asking for others’ opinions. The fastest-growing scan analysis trend is the “nub theory,” which uses the 12-week scan picture to see what angle the nub — a small lump where the genitals will develop — is pointing.

The theory, used by one in 10, says if the baby’s nub points up by 30 degrees or more it is a boy.

Otherwise it’s a girl, with seven out of 10 claiming the technique accurately predicted their baby’s sex.

Meanwhile, 6 percent said they tried the “skull theory,” with a square skull and jaw said to be a baby boy and a rounder skull a girl.

But seven out of 10 expectant moms use the more traditional method to guess the sex of their baby by the shape of their bump.

If it is wider it is said to predict a girl, but if the bump protrudes more it could be a boy.

A third analyzed their food cravings and half even tried to predict the gender by how sick they felt.

More unusual methods included a 12th who looked at the size and shape of their breasts, and a fifth who used a Chinese Gender Calculator to guess the sex using conception date and the mother’s age.

Overall, one in eight couples admitted they had tried to sway the gender of their child to get their desired sex.

Over a fifth had sex at set times of the month, with making love on the day of ovulation believed to be more likely to create a boy.

But if couples stop having sex three to four days before ovulation their efforts are more likely to produce a girl.

英国准妈妈流行发“胎儿自拍”让网友猜测性别

英国准妈妈们让自拍热潮上升到了一个新高度，她们纷纷将自己怀孕12周的B超扫描照片发到网上，让网友猜测宝宝的性别。

育儿网站“妈妈网”的一项调查显示，三分之一的英国准父母曾在推特和脸谱网上传过B超扫描照片，让网友猜是男是女。

还有五分之一的家长把照片放到育儿网站上征询他人的意见。

最流行的一种扫描分析方法叫做“小肿块理论”，它主要是看第12周B超扫描照片中宝宝身上小肿块的角度——这个小肿块所在的位置就是宝宝生殖器将发育的位置——以此判断生男生女。

有十分之一的人相信此理论，他们认为如果小肿块翘起来30度以上就是男孩。

反之就是女孩。有70%的人称该方法准确地预测了自家宝宝的性别。

与此同时，有6%的人尝试了“头骨理论”，他们认为有方形头骨和下颚的是男孩，头骨偏圆的是女孩。

然而，有70%的准妈妈们采用了更为传统的方法，通过肚子的形状来判断宝宝的性别。

肚型浑圆为女孩，肚型尖凸则为男孩。

三分之一的孕妇会分析她们特别想吃的食物，甚至有一半的孕妇会通过自己的孕吐情况来预测孩子性别。

还有一些不太寻常的方法，包括有十二分之一的准妈妈会看乳房的大小和形状，五分之一的人用中国式算法来预测，主要依据是怀孕日期和母亲年龄。

总体看来，八分之一的准父母承认了他们曾试图“干预”宝宝的性

别，为得到他们想要的男孩或女孩。

超过五分之一的夫妻在每月固定时间发生性行为，因为据说在排卵日受孕更有可能生男孩。

但是如果在排卵日前三到四天就停止发生性行为，则更有可能生女孩。

    Words to Learn 相关词汇

    【隆起的腹部】

    lóngqǐ de fùbù

    (baby) bump

    a woman’s abdomen as it begins to protrude in the earlier months of pregnancy

    【影响】

    yǐngxiǎng

    sway

    exert influence or control over