Blueface's Mom Slams Chrisean Rock Face Tattoo, 'F***ing Crazy'

Blueface's mom is tired of Chrisean Rock's antics -- she has her fingers crossed the new face tat she got of Blue is fake, and that she finally leaves her son alone. Spoiler ... at least one of those wishes won't come true.

TMZ got Karlissa Saffold outside L.A's Men's Central Jail on Wednesday, following a failed attempt to see her son, and she tells us Chrisean's enormous tattoo of Blueface's mug on her cheek is "absolutely f***ng crazy" ... and she thinks it's a shady ploy to make Blue feel obligated to deal with her once he gets out of jail.

She also has a very simple, passionate reaction to CR moving back into Blue's pad -- "Hell motherf***ing no!" Karlissa says, again, the move will give Blue zero chance of escaping Chrisean's shenanigans ... when he should be focusing on getting his mind right.

What's more, she believes the face ink stems from mental issues ... and her son isn't trained to unpack Chrisean's baggage for her.

For her part, Karlissa's tried to support Chrisean for the sake of her grandbaby ... but is now taking a step back after seeing her on IG live saying she wants Karlissa to die.

But of course, as any doting grandma ... she's still willing to take care of the baby if it comes to that point.

For now, Karissa tells us she's devastated Blue's in jail for a probation violation -- in fact, it's her worst nightmare, especially cause her eldest son served 13 years behind bars, too ... and now history's repeating itself.

Basically, she's got a lot on her plate, and says CR needs to go find someone else's family to play "Fatal Attraction."