Here.
Apparently it’s something called an intellectual stammer. Obama has it. William Buckley had it. I have it. It’s common in university professors and other such types. Lots of brainiacs have it. Supposedly it is because your mind is moving too fast your mouth, but that’s not the case with me. I actually cannot find the word I am looking for, or alternatively, my mind seems to “go blank.” I also often forget what I was saying in the middle of the conversation, forget what I was going to say next, etc. That is because my mind is wandering around so much that it is wandering away from the conversation itself!
Why does my mind “go blank”? I don’t get it.
There is actually a phrase for this called speech disfluency, and most people have it except for those people, mostly female, who think with their mouths open. The words differ among various languages, and some research indicates that ~20% of our conversational words are this sort of filler, white noise, space junk, garbage, nothingisms, or whatever the Hell you want to call them.