The voice belongs to Chips Dubbo, an Australian UNSC marine in the Halo games. Lines like this were originally recorded to give background marines personality during firefights, rather than to serve as jokes. Once Halo clips began circulating on soundboards and in gaming videos, the line found a second life as a reaction to sudden deaths and cowardly retreats. Its short length and clear panic make it easy to drop into edits, which is why it continues to circulate among Halo fans and meme editors.