Yaya Mayweather took the homemade route to celebrate her son KJ on his fifth birthday. She shared sweet footage of a cake they baked together. The mommy duties moment comes after Yaya seemingly shaded NBA YoungBoy for allegedly being in the same state as Kentrell Jr. and not visiting him. Meanwhile, her mom, Melissa, dropped an adorable social media post celebrating her grandson's birthday.RELATED: Aww! Yaya Mayweather Reveals Sweet Christmas Gift NBA YoungBoy Got Their Son (PHOTO)Yaya Mayweather Shares KJ's Birthday CakeEven with a dad worth $300 million, there's nothing like homemade magic.