I'm sure I'm not the only one who gets regarded as a table-jumper after a few trips to a given casino. The dealers, PCs, and players are always whispering about this. They apparently don't put 2-and-2 together to ascertain why I might be doing this.
The other one that the average player loves is re-creating a hand after the fact. Player love playing out as Monday Morning QB. The one that I will say agitates me sometimes...:
* Player just to my right is contemplating Hit/Stand on a 4-card hand. I know that the small cards are being used up and know that Stand is the correct play. Of course, I'm waiting for the face card on my upcoming double. Boom, he busts out on the 10 and leaves me a small card.
Of course, I'm numb to all this. But I do hear it sometimes.