Miming your thoughts out (words)

What makes us humans unique is our own individual, independant thinking. Sometimes when Im thinking I think I mine out what I am saying. Like talking to myself. I dont do it all the time but I dont notice it all the same. Sometimes i think im being paranoid though. You can tell when someone says f*** or s*** to something without hearing what they say. If you're thinking and you just stop and wonder, how many of you would now mine "oh yeah", as in saying i do that or agree to something. no one has ever told me they can read me miming words out, maybe people dont notice but i was just wondering.