This needs some setup: It's three guys on a golf course, and one of them is the SURFBOARD in this video. So, the surfboard guy is lying on his back in the grass being PUSHED by a guy driving a golf cart. A third guy is the SURFER.
He's literally standing on the surfboard guy's chest and riding him WHILE pouring beer into the guy's mouth . . . and they're all moving forward on the smooth grass.