The 31-year-old actor shared the incident during his appearance on "The Howard Stern Show", reported Us magazine.
"I've never actually said this before. I was stealing porno magazines and selling them at school. No one knew at all what to do with them, though...I'd sell them for a lot of money.
"I used to go in and take, like, one or two, and then put them in my bag. I was in my school uniform when I was doing it, and it was kind of risky. At the end, I got so cocky that I would take the entire rack," Pattinson said.
"I remember the guy who worked in the store shouting, like, 'Hey!' and then my two friends ran off, and I turned around, like, 'What?' I walked back up to him. I hadn't zipped up my bag.
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"This guy is pulling out all these porno magazines -- and it was when porn used to have, like, VHS tapes in the plastic sheet with it -- and he's pulling all these things out, and I was sitting there humiliated with all the old people looking at me disgusted," he recalled.
"Basically, a couple of days later, everything fell down. Basically every single one of my friends snitched on me, literally, across the board," he said.
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