I just saw this on a server recently and laughed my **obscenity** off.
Basically, when the game started, one person went gorge and built three movement chambers. Then the rest of the team went gorge (except one) and upgraded to adenaline. Then all 8 gorges and one skulk stormed the marine base spamming health spray everywhere. The combined cloud of health spray healed the gorges and killed the marines very quickly. The skulk finished off the respawn points.
A good little tactic if you have a coordinated team. It'll certainly drop some jaws.