Anti-Fairy Pregnancy is the total opposite of Fairy Pregnancy. In Fairy biology, it is the males that give birth to the babies. The pregnancy lasts three months and while ready to give birth, the Fairy will feel severe pain. In the case of Poof, he had to be wished out since no one knew how to deliver him. It is unknown if there is another way to deliver a fairy baby other by wishing for one. However, in Anti-Fairy society, it is the females that have the babies. It isn't known how much does it last and the anti-fairy won't feel anything.
There are five stages in the pregnancy that a female Anti-Fairy must go through before giving birth to an Anti-Fairy baby.
The female Anti-Fairy will have strange cravings for objects that don't taste good (such as doorknobs or pillows) and will eat more constantly than in Fairy or Human Pregnancy.
The female Anti-Fairy, like all pregnant people, will go through mood swings and overreact to most of the situations.
The female Anti-Fairy's belly will bonk her face, smack the floor and bounce the mother around as it expands, meaning that the baby is turning upside down and wildly kicking inside her uterus.
The female Anti-Fairy will throw up "Anti-Barf", which consists of pretty butterflies, in contrast to the purple glittery vomit that Fairies throw up. The butterflies are thrown up alive!
Her stomach will inflate like a balloon until it explodes in a large cloud of smoke, resulting in the birth of the baby. During labor, the Anti-Fairy feels no pain and actually enjoys the experience, and because Anti-Fairies do not have godchildren, the baby is born naturally (without magical assistance). Also, the labor is very short, just like the labor in Fairies, with the difference that the Anti-Fairy labor doesn't need to be executed in a hospital because the baby can get out alone, without any wish or medical help.
- Anti-Fairy pregnancy is close to human pregnancy, because it is the female that gives birth instead of the male.
- Anti-Wanda is the only Anti-Fairy to be seen pregnant on-screen. She gave birth to Foop. This indicates that it may be another Anti-Fairy that will get pregnant in a future episode.
- Anti-Fairies seem to be similar to Yugopotamians, because Anti-Wanda pukes butterflies, instead of human vomit or purple glittery fairy vomit and Anti-Cosmo states that that's Anti-Vomit. This reveals, along with another facts, that Anti-Fairies think that beautiful things are ugly, as opposed to Fairies and Humans who think pretty things are pretty and ugly things are horrible.