Marferdy. It is used as an exclamation, or in replacement of a cuss word. So if you stub your toe it's Marferdy! instead of dammit. If we dislike something it's awe marf, but also a form of endearment if someone does something sweet again it's awe marf, it's all in the voice inflection. Marferdy is a very versatile word in our family
As for farts, my sister started using 'pause' and now everyone else says it too when they pass gas. Rogue however says squirrels... figure that one out.