The former Baywatch star surprised the 14 new housemates when they entered the house on Friday night. During her time on the show, Anderson set several tasks, during which she awarded golden swimsuits, which granted immunity from the first eviction.
Speaking about her decision to take part in the show, which follows guest appearances on Australian Big Brother and India's Big Boss, Anderson told ITV's Loose Women that she likes to meet new people.
"Well I don't have a lot of friends so I look forward to meeting people," she said. "And actually… well, I have children - I have no time for friends."
The 44-year-old said that she had found some of the younger males' flirting strange to deal with, noting: "Well, they were half my age - so that wasn't that comfortable.
"One of the boys, Aden, said his mother was 41 and his dad was 38, and I was like, 'No, I'm older, I'm 44. I'm older than your parents!' That was odd. And then I realised how much time do I have in this house? How much time do I have in here?"
Anderson, who said that she is currently "in perfect health" also told the lunchtime panel that she enjoys being recognised for her role in Baywatch. "I could be remembered for worse," she said. "So I actually love it when everyone brings up Baywatch - I'm like, yes, that's me!"
Anderson's final day in the Big Brother house will be shown tonight from 10pm on Channel 5.
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Watch Pamela Anderson say her goodbyes as she left the Big Brother house below: