It may seem like everyone in Hollywood is getting high, but Kirsten Dunst will be quick to tell you that’s not the case – at least not THAT high on purpose. 

The teen movie queen turned serious adult actress is doing a press run for her upcoming Northern California-based art film Woodshock and stopped by Jimmy Kimmel Live to share a story about a hilariously traumatic encounter on set in which some supposedly fake prop weed was replaced with the real deal.

“We were doing this one scene and we were doing one take after the next and I hadn’t been eating, and I started to feel like I was losing my mind.” Dunst told Kimmel. “I went to the bathroom and started pacing, then went to the director and said ‘I need to go to the hospital.’”

After a producer discovered that Dunst had smoked a full joint of what she described as  “Humboldt weed, strong shit” during one of the takes, she skipped the hospital visit, but continued to alternate between laughing, crying and eating. Dunst said she got so obliterated that she had to be sent home from set.

Upon further investigation, the actress said that the film crew's Humboldt locals hired to roll the movie’s prop joints had, either accidentally or as a prank, pulled the ol’ switcheroo, and if you’ve ever eaten a homemade brownie that turned out to be a little more special than you’d bargained for, you know exactly how uncomfortable Dunst must have been feeling. 

Dunst describes Woodshock as “like watching a poem,” with a focus on sight and sound more than dialogue, so who knows, it’s possible the real weed take made it into the film for some cannabis authenticity.

Woodshock debuts in select theaters this weekend.