Yeah, I don't get that either. I think I'm a pretty good mom, and I do curse like a sailor, but I would never in a million years dream of buying or wearing that shirt, or any shirt that proclaims me a "good mom." I'd say maybe her kids bought it for her--when mine were younger, I could see them thinking something like this was cute/funny and buying it for me--but I still wouldn't wear it out of the house if that was the case, unless I had to (i.e. they were with me and asked when I was going to wear it).