*jessica alba walks into the room*  guy #1: tap tap  *guy #2 immediately turns head to see who walked through the door*  guy #2: tap tap
a subtle way of letting other guys around you that some hot piece of ass is walking by
"*jessica alba walks into the room*  guy #1: tap tap  *guy #2 immediately turns head to see who walked through the door*  guy #2: tap tap" What is the definition of "tap tap"?