What about "sayings" that make no sense whatsoever?

I started thinking about this from another thread. There are some sayings that people either use incorrectly, like; “No rest for the weary” (it’s wicked, not weary). Then there are sayings that are simply complete and utter nonsense like; “She wants to have her cake and eat it too!” This makes no sense. Of course I want to eat my cake! Idiot! That’s why I have it! Otherwise what would be the point? And if I don’t have it, I can’t eat it! Eating it requires that I first have it!
There must be bunches of these pointless sayings out there that rub others the wrong way, or that people say incorrectly without thinking about it first. Do you know any? Or is it just me?