This is my Hybrid Teemo Build, this build is a early harass build because of your blind shot and poison. When i play Teemo, i usually solo mid in 5v5 or solo top in 3v3. M summoner spells are meant to be for a 5v5 match. I personally like teleport in case i need to go back before the enemy champion and need to come back fast. Ignite is good because your poisons stacked on top of ignite is a good finisher if u need to back up or if there running away. This build is very effective against AP casters like Anivia or a AD champ like Miss Fortune. The key to the build is to be very aggressive with your blind shot. In the late game your blind shot is less effective damage wise because it is not a full AP build, but your blind is still very good in team fights so be sure to constantly use it. The madreds in the build is for champions who may have high HP like Rammus or Shen because without a madreds, Teemo has a hard time killing them. Now i have move quick as a late ability, but that is solely up to how much you may need it. If your going mid against Anivia and have troubles dodging her Flash Frost, then you may want to get it earlier. The key to this build is to try and lure your enemy into your mushrooms and from there kill them which is why I find this build to be a little more on the difficult side. You can use this build as maybe a first time Teemo, but if your not good at luring your enemy, then you may have to play more conservative till at least your Madreds.
Well that is my Hybrid Teemo Build, have fun with the Swift Scout on the Fields of Justice!