Ok, this should only be done if u have a good allie because you will fall far behind along with your enemy and your allie will have to back you up. Start by makeing all your drones go to minerals and get more drones untill u got 9. Then make an spawning pool. While it is forming, send 1 of your drones into your enemys base. DO NOT let him see your drone. Then, when u have enough mins make more drones at your home base, and send them on minerals. Once you have 300 minerals make a hatch in his base. Then, make drones on that hatch and make Creep Colonys and morph them into sunkens. Keep going farther into there base with sunkens. You have to do this fast, as in before terran get tanks and before anyone gets air. Make lings to back up your line of sunkens in there base. This will mean certin death to your enemy. =P

Extras: You can make Hydras at the same time and do MAJOR damage. If you are very good, you can wait with that drone untill you get a hive, then make a Hatch and nydus right into there base!

CreepColony's Opinion: I don't think this will work because a hatchery takes a while to build and your opponent will probably find and destroy it before it finishes. Even if it does finish, your opponent will probably see the creep and quickly destroy your hatchery.