A dancer taps their own shoes together.
(from batango.com (http://www.batango.com/Loomis.htm))
Now try the last two patterns again, but this time at the end of each side step do a new kind 'golpecito'. Rather than tapping the floor with the ball of your foot, tap the side of the shoe on your supporting foot with the side of the shoe on your free foot. This is called the Zapatazo (Shoe Tap).
(from larrydla (http://home.att.net/~larrydla/basics_7.html))