I usually say something similar to what I mean. For example, I might say, "Can you bring me my feet?" instead of "Can you bring me my shoes?"

They're amusing little moments to lighten the day.

And, I disagree that slowing down will make a difference. If I am asked to repeat myself, it still comes out the same. If I try to figure out what I said that's wrong, I usually can't until someone points it out.