The bongcloud is one of the most aggressive and highly held openings of the Ultramodern school when played by white, having no formal refutation. As black, however, effective use of the bongcloud requires a more defensive strategy. The Owen's Delayed Bongcloud demonstrates that a secure defensive position can be achieved through 1. e4 b6 2. d4 Bb7, prior to commencing the king attack. Here is a game of mine that perfectly illustrates the tactical beauty of the Owen's Delayed Bongcloud:
http://en.lichess.org/MDhotPDG/
http://en.lichess.org/MDhotPDG/