My little one says, "Da#$% it!" whenever he is frustrated or something goes wrong. My plan has been to completely ignore it and not give it any attention. I have been making sure that I don't use bad words in front of him so that he doesn't pick up anymore. I'm not sure where he picked up that one because it isn't a phrase that I use. I have been working on my cursing habit since my older son was born. I've been good, but I'll admit, certainly not flawless. I try to substitute other words for my own. I'm hoping my little one will pick up on those. This sounds insane, but I actually learned a few Klingon curses. Sounds ridiculous, right? If he ever repeats a Klingon word, no one will understand or be offended, right?