How can one exchange Bitcoin for PayPal credit?

I'm aware that PayPal's terms of conditions do not allow for purchase of virtual currencies such as bitcoins, however, is it possible to sell bitcoins and receive PayPal credit in return? MtGox allows you to exchange BTC > USD, but there's no way to withdraw it using Paypal or a similar service. Is there an exchange that supports either MtGox coupons or direct bitcoin transactions to top up a PayPal account, without the use of a credit card or bank transfer? I'm interested in more obfuscated methods/workarounds as well, even with the use of multiple exchanges. To know more bitcoin to paypal