Rob got so mad he ended up tweeting out Kylie’s real cellphone number.
As it turns out, Kim Kardashian had arranged for it to be a "guy's baby shower" from the get-go and even got Chyna's blessing beforehand.
However, because the communication between Rob and his pregnant fiancee was so strained, he didn't understand the plans.
Rob ended up skipping the party organized in his honor and going on a Twitter rant dissing his family instead, which he regretted almost immediately.
The 28-year-old reality star
tried to make things right between him and his mother by getting her some balloons and delivering a heartfelt apology.
"Of course I feel terrible that the shower they planned for me got ruined," Rob said in a solo interview. "Sometimes when Chyna and I aren't doing so well, I let it get the best of me and I need to work on that."
For her part, Kris was very forgiving, telling Rob, "We all love you so much and we’re so happy that this is happening. We can't wait till she's born."