Well, it seems this big sis wasn't having any of it!
Koko took to Twitter on Monday with a very cryptic message about all the "sh*t", writing:
[Image via Instagram.]
We wish this really happened!
The film also features a great supporting cast in Karen Gillan, Will Forte, Lena Dunham, Michael Sheen, Howie Mandel, Fred Armisen, and June Squibb — with cameos from real tennis legends Serena Williams and John McEnroe!
Ch-ch-check out the trailer (above) for what's sure to be a HIGH-larious fake glimpse into the world's longest tennis game!