Let's not make too much of these. There are many ingredients other than "tells" that go into making your deception work at the poker table — chiefly your image in the mind of your opponent, the strength of your opponent's hand, your recent betting experience at the table, the size of your bet and the like.
But sometimes all those other factors make it a very close call for your opponent, in which case it is possible what you say and do while you are betting can tip the balance. Picking spots correctly and using the right words and actions might get your attentive and reasonably good opponent who is on the fence to make the wrong move.