Kate Beckinsale’s first kiss was a “horrible experience.”

In a new interview, the “Underworld” actress told the story of kissing a man who had just eaten a meaty pizza beforehand.

A “militant vegetarian” at the time, Beckinsale said she was surprised to have kissed anyone after that.

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“It was so bleak. I’m surprised I ever kissed anyone again. I was quite a late bloomer,” she said on “The Late Late Show with James Corden.”

“All my friends had done it. I thought, well, I'm going to have to kiss somebody, otherwise I'm weird,” the actress continued.

“I was at a party and the person who wanted to kiss me was American, of course. It led me on a terrible path I'm now stuck on.”

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Beckinsale then spoke about the traumatic experience she encountered with meat.

“I was a really militant vegetarian at the time and he had just eaten a meat lovers pizza. Massive trauma,” she noted.

“I thought kissing was a dry experience but as it was happening I realized, oh, there's all that kind of wet activity inside the other person's mouth with lots of bits of sausages in as well.”

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Moments after the kiss, Beckinsale phoned her mother to lament over the experience.

“I called my mom and said, ‘I need to go home now, I've had a horrible experience with meat.’”

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Beckinsale thanked her mother on Instagram, writing, “As always thank you to my mum for rescuing me from meat loving Americans in a Peugeot.”

Beckinsale was most recently romantically involved with comedian Pete Davidson. The two reportedly began dating in January and ultimately split in April.