Scammers tried this on me once. What they do is send you a fake payment slip (usually with an old out of date paypal logo) to your paypal email and request you wire transfer a fee of like 300 to a "PayPal representitive" who will then release the funds to your account. This is bogus.
PayPal never requires money to recieve money. It's comical. Guy argues with me for three days he was legit.