San Antonio Slap Share definition Flag After having vaginal intercourse, removing the ejaculate filled condom and slapping her in the face with the condom. Man I gave her a San Antonio slap right in the eye after I tore her up. San Antonio Slap by CPR1 April 13, 2008 0 0 Get merch Get the San Antonio Slap mug. Buy Now — $32.95 See more merch