A sexual act where a Asian woman pours sand or another gritty material on a man's ass crack and then proceeds to sodomize him with a strap-on dildo, slapping and scratching him on the back. Origin: Conan's second TBS show.
Dude 1: Why you walking so funny?
Dude 2: Oh man, had a Tokyo Sandblaster last night.
Dude 1: Alright! (high fives)