Brilliant, absolutely brilliant! DHL has pulled the greatest prank and most epic corporate trolling to have ever been captured on video. They recently wrapped some packages with thermal active foil, which turned the packages black. Once they warmed up they revealed a hidden message 'DHL IS FASTER'.

After they wrapped and froze the packages they had their competitors deliver them. Needless to say epicness ensued! Who needs an expensive add campaign when you can have your competition advertise for you. It's the ultimate corporate trolling. Well done DHL, well done!