It’s when you’re receiving a blowjob from a girl, and right when you’re about to nut, you squeeze your dick, allowing the jizz the build up pressure... Then you pull out, release your grip and blast on her face... much like a sand blaster from San Clemente
Brittany who is from Ohio was giving Derek head, when he was about to cum, he squeezed his Weiner, pulled out, and sand blaster her face- all the while yelling “welcome to San Clemente Sand Blaster, Bitch” !