Serena Williams shared a hilarious off-court video in commemoration of Throwback Thursday (or #TBT as the kids call it). The 35-year-old is seen sipping on champagne with friends, while maniacally playing a prank.

Before anyone freaks out, Williams, of course, hasn't been near the bubbly in a long while, as she is expecting her first child in the fall. The 23-time Grand Slam champion very likely misses tennis a lot more than champagne, but at least she has more time than ever to spend time with pals.