Actress Jennifer Lawrence says she becomes "incredibly rude" in public.Lawrence is widely regarded as one of Hollywood's most down-to-earth stars. However, she says her attitude towards people changes as soon as she enters a public space, reports variety.com."Once I enter a public place, I become incredibly rude, I turn into a huge a**," Lawrence said."That's kind of like my only way of defending myself (from fan attention)," she added.The 27-year-old actress said she has no qualms about declining to pose for selfies with her fans."That's like my only defence. One of my best friends is Amy Schumer. I take my dog to the park all the time, Central Park. As soon as I meet her in the park, we're f****d," she said.