How To: Fixing iPhone’s Ducking Profanity auto-Correction
Apple, like any well intentioned public company, tries to make its products profanity-free by auto correcting profanities to something as harmless as a duck. However, there are some situations where people need to exercise their freedom of speech. To solve this problem, users with the 2.2 update can turn off auto-correction by tapping Settings -> General -> Keyboard -> Auto-Correction Off.
But turning it off can cause a lot of inconveniences, making you look like a non-English proficient baffoon if you don’t pay enough attention to what you’re typing. To have auto-correction turned on and still type your favorite bad words on the iPhone, simply add the words to your contact list as a last name or first name. Remember to save.