The bad news: Roseanne Barr's mother found a cannabis-infused cheesecake in her daughter's fridge, ate too much of it and had to be taken to the emergency room. The good news: Roseanne is opening a dispensary, so her mother can now become more educated about edibles and proper dosages.

In a recent interview with Conan O'Brien, Barr told the story of the night her 83-year-old mother came to visit, and got a craving for the cheesecake in Barr's fridge. Not realizing it was infused with cannabis, she cut a slice and took a bite. She didn't like the taste (it being infused with marijuana and all), and decided to melt a chocolate bar as a topping to disguise the taste. She didn't realize the bar was also cannabis-infused.

"She started getting all woozy and we had to rush her to the emergency room because she had taken 26 doses," says Barr. "She's never even had a drink in her life or anything like that...You can't overdose on marijuana, which is lucky. But for old people it can make their blood pressure drop, and she had all that. It was terrifying."

Barr's mother was okay, though, and maintained her sense of humour throughout. They didn't connect for two weeks after that, prompting her mother to call and leave a message: "What does a bitch have to do, OD to get you to call her?!"

In Barr's interview with Conan, she also talked about her new marijuana dispensary. It will be called Roseanne's Joint, located in Santa Ana, California. Last year, Barr revealed she was going blind, and using cannabis as part of her treatment. Even though Barr knows marijuana's value as a medicine, she couldn't resist getting a laugh out of Conan. "It helps a lot of people like me who have a lot of anxiety. For example, I get very anxious when I think I'm going to run out of pot..."

Barr also revealed she is starting an edible cooking show. Proper dosing will surely feature prominently. Perhaps her mother will tune in.

h/t The Orange County Register, The Cannabist.