Chris Rock's mom just made it clear ... when Will Smith slapped her son, it was personal.
Rose Rock made her displeasure with Smith obvious during an interview with WIS TV in South Carolina, saying, "When he slapped Chris, he slapped all of us. He really slapped me, because when you hurt my child, you hurt me."
Rose wasn't done ... "You reacted to your wife giving you the side-eye, and you went and made her day because she was mulled over laughing when it happened."
And she seems to feel Will got some payback, saying, "No one heard his [acceptance] speech. No one was able to just be in the moment because everyone was sitting there like, 'What just happened."
Rose, like most of us, initially thought the slap was staged, but she knew it was real when Will started hurling obscenities at her son.
Chris has yet to accept Will's apology, and our Chris sources say that may not be coming any time soon.