This guide will get fancily formatted later, as I figure out how everything here works. For now, I'll be filling a niche with my fancy new Teemo Support guide!

Laugh all you want, it works.

-Only a little incomplete. I'll cover the items eventually. Feedback welcome!

Pros:
- Teemo is a hugely successful harassment champ toplane, and his Q will remove a fairly huge chunk of an ADC's farm and kill potential. A good Teemo can out-duel MOST ADC champs.

- Teemo has a global taunt, which means your ADC is less likely to be focused- in lane, at least.

-Supports have to ward. Teemo's kit includes a free, deadly ward (not including Teemo himself). This leaves his Sightstone slot open for a more effective item. Support Teemo is just as horrifying as Top teemo!

- You are Teemo. Be the ward- and set up clever traps for opponents. You have fairly decent poke, particularly if they step on your mushrooms, but you really shine if you get off more than one autoattack- get them low enough, and they'll learn they can't run from poison.

Cons:

- You will be focused, and you're quite possibly the squishiest support anyone has ever seen.

-If your ADC won't play aggressively, you won't get kills.

-Blinding the opposing ADC can be high-risk.

-You MUST use your Spellthief's Edge and upgrades, trying not to let them reach full stacks. That's a waste of gold that you need to finish your build.

You always want Flash and Ignite- few exceptions. Flash gets you out of places your W won't, and ignite ranges from scaring to finishing off laning opponents. You might also take Exhaust if you're afraid of being chased, Teleport if you're confident you won't need the finishing power and want to split push, or Barrier for emergencies.

Yes. You NEED 10% CDR from your masteries. It's heavily important; it allows your Q to be up as often as possible early game. This and speed quints (by level 3 you've got quite a hefty % speed boost) will make your lane opponents cry. Speed quints can be traded for more XP quints, MR quints, or Attack Speed quints.

The mana regen in the Utility tree is a no-brainer; Teemo has mana issues early on.

Inspiration is there so that in ideal conditions, you can roam, ward, potentially gank, and then come back once your ADC levels up to gain experience faster. The XP quint is along the same lines- but you can use an Attack Speed or Ability Power quint if you would prefer.

AP Glyphs are your best bet for Teemo, and Marks and Seals should be Armor; that ADC is going to really want you dead, after all.

Teemo can be a support! Really! The number one big deal here is blinding the ADC and denying both of your laning opponents farm and experience. Drive them back, kill them, and get everyone to hate you- this will keep your ADC safe, in turn. The best part about Teemo support, however, is his late-game; at level six, Teemo can plant explosive wards far faster than the warding trinket allows, without needing a Sightstone. This means you have one more slot to build just like a top-lane AP Teemo- and since Frost Queen's Claim is a passable AP item (which can be replaced at the very end of the game if you want), this makes you extra horrifying in team fights.

Another important trick is to leave your lane a lot after 6. You only need 5 mushrooms to adequately trap your lane, so why not dedicate the rest to warding the whole map? Gank mid, make their jungle dangerous, or just stand around and be a ward- and then come back and collect your free XP point every second until you catch up with your ADC.

Last but not least: The best ability Teemo has is RUNNING AWAY. Use your W and never get hit if you can help it.