She was watching Game 6 with Dane Cook when security approached her and asked her to leave.
The cause of her ejection? A complaint from big-time Lakers fan Jack Nicholson.
"We made it our business, our second job to go to all these games and really rally for our team," she said on "Conan."
"And all of a sudden, we're outside. I'm screaming, going crazy. I get booted!" Menounos said. "These guys come and pull us out, and I'm like, 'What is going on?'"
Turns out, Nicholson was pulling a prank on Menounos -- but Menounos didn't realize it until she ran into the trickster coming out of the bathroom.
Menounos said Nicholson said he called former Lakers owner Jerry Buss and had her removed. When the two ran into each other, Nicholson told Menounos, "I see they moved your seat."