Kooky Tara Reid has a bizarre way of making new friends in Atlanta while shooting the latest “American Pie” movie. The disheveled-looking actress stopped two strangers in a Walgreens parking lot over the weekend, a source said, to ask where the “nearest Mexican restaurant was. She was wearing torn jeans and a pink hoodie, despite the 90-degree heat. She was pushing a shopping cart with her dog in it.” While Reid’s parking-lot pals gave her directions, a Walgreens manager emerged and ordered Reid to return her cart. “She whined, ‘I’m just borrowing it,’ ” our amused spy said. But Atlanta, it seems, isn’t Hollywood. “Ma’am, please, we don’t have that many,” said the clerk, whom Reid argued with before ditching the cart, grabbing the dog, and storming off. Reid’s pooch, Pasha, has been a regular character in her tweets from the “American Reunion” set, including, “. . . another dog charlie tried to hump my puppy pasha she was not happy.” Reid’s rep didn’t return calls.