Bay seniors who are convinced they’ve seen everything will be happily confounded when they get a look at American Tripps, Berlin-style ping pong where dozens of people rotate around the table following each hit. Get your first experience of this semi anarchic sport on Saturday February 18 at Z Space in the Mission District from 5 pm to 3 am. Yes,you read correctly – 3 am. They’ll be four tables in action. Outside there are food carts. And for the first two hours free PBR, aka Pabst Blue Ribbon, the brew favored by our grandfathers. $5. For more conventional ping pong events, check here.