By looking at the build it should be easy to see that it is an AD build. But not like others with almost no though of defense. This is so you can stay in teamfights longer and still do a significant amount of damage to your target. If you think that this build should get rid of some of those defensive thoughts comment and I'll see how it works out. I only think this build is good because i have used Teemo like this in Ranked Games (Solo) and have never gotten a negative KD. In Ranked (Solo) my total score with Teemo is 44/25/63 so remember this build is for survival and damage.

Why I added Thornmail was to help Teemo in teamfights. In teamfights Teemo is sometimes or most of the time focused down so having and item like Thornmail can give back some of the damage they are afflicting to Teemo. If he dies at least he will die by severely lowering the health of the other teams champions.

If you are in middle lane and you get your ultimate put your first to mushrooms in the brush that is located to the right and left of you. Then once you return back to your base put one in the bushes in the lake on both sides of you. If going to a different lane for a gank put a mushroom in the brush or in the middle of the edge of the lake. Also put mushrooms at both Red Buff and Blue Buff in the bushes so you can see if an enemy is in your territory. If you would like to be funny with your mushrooms put them every where in the lake you might jest get lucky and catch a low health enemy with your mushrooms and get the kill. Being funny with your mushrooms is what i do 55% of the time and I usually constantly get caught be an enemy and end up dieing. That is another reason why I have some defensive items. (See Chapter 2 for info on Thornmail and Chapter 1 on the Build's purposes).

O.k. in this build you should constantly be poking no matter what situation your are in unless it is 3v1 or higher. So you can play safe by just lowering their heath slightly by poking them and staying back. This way to play has a downside though the probably will push your tower really hard. So if you rather keep the other team from destroying your tower then you should play a different way. I am not saying that this strategy will not make you lose a tower for sure but you probably will. But do not fear you can play offensively by risking your life and having the change of feeding the other team with will make them harder to kill. That is why the way my strategy works is to try to keep making whoever you are laning against will have to constantly go back to get more health. So eventually you will end up controlling the lane by simply being higher level then them or more advanced items on your belt.