COREY COWERS AS KRIS SNUFFS HIS CANDLE!

Poor boytoy crushed under weight of her massive ego

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NIGHTMARE narcissist Kris Jenner's 69th over-the-top birthday blowout was no party for her long-suffering boy toy, Corey Gamble, sources tell GLOBE!

The self-titled "iconic queen matriarch" had no fewer than four cakes to celebrate her big day, then toasted herself with champagne in a gilded glass. She wore pajamas adorned with her face that one fan dubbed "the epitome of narcissism" and another said was "not cute."

"Her birthday wasn't just a celebration, it was a production, and as usual Corey was treated more like an assistant than her boyfriend," snarks an insider.