So, that Instagram post Russell Westbrook made back on July 4 really did mean something. And of course, it was a shot at Kevin Durant.

Westbrook made this simple post after Durant’s decision to leave the Oklahoma City Thunder for the Golden State Warriors back on the Fourth of July and we’ve all wondered ever since if it had something to do with KD.

Here’s the post:

HAPPY 4th YALL….🇺🇸🇺🇸🇺🇸 A post shared by Russell Westbrook (@russwest44) on Jul 4, 2016 at 10:40am PDT

Well, now thanks to Sports Illustrated’s Lee Jenkins, we now know that it did mean something. Here’s an excerpt from Jenkins’ story on Westbrook this week:

Westbrook and Durant were not best buds, but they were peerless partners, a souped-up Stockton and Malone, transporting a mini market to the big time. Westbrook’s closest friends are actually former high school teammates, long-standing wing men like Donnell Beverly and Demetrius (Juice) Deason, who flank him in summer pickup games and play dominoes with him on the Fourth. “He didn’t talk much about what happened,” says Beverly. Westbrook didn’t disparage Durant. He didn’t judge him. All he did was take a picture. When Kendrick Perkins played center for the Thunder, he called teammates “cupcake” if he thought they were acting a little soft. Westbrook and Durant adopted the term in jest. Westbrook posted a bittersweet pic on Instagram: three plates of cupcakes topped by red and blue stars and sprinkles.

Well, there you have it. Westbrook essentially thinks KD is soft for joining the Warriors.

The Thunder travel to play the Warriors on Nov. 3.