I've noticed that in my home, there are certain things that get said to me on a regular basis. For example, if I pass gas, someone will say, "Oh, that's close to the source." In other words, that smells like poop. But since they both come out of the butt, isn't that sort of obvious?
If I bust a grumpy, someone always cries out, "Man, that stinks!" Again, why say it? How is my grumpy in any way unusual?
Even better, someone will complain, "Why'd you do that?" To which I say, "Why NOT?"