Teemo is arguibly one of the best champions in the game if not "THE BEST", many players think they can go top solo teemo and be useful late game, but the truth is; teemo basically lacks an ult, placing shrooms and having to wait for the enemy makes you only have 3 skills and one of them is a sprint, making you have a clear disadvantage during 1v1s and teamfights, so unless Te-man gets a really easy early lane, they are just another squishy ADC that will probably be stepped on during team fights turning your games into a horrible 4v5.
But if you are still reading this that means you are tired of the endless losing streak while using the mighty teemo and are ready to get some serious penta-kills/assists.

"The Tee" as I like to call him, has the potential to become one of the best and most annoying tanks in the game! ever tried destroying a bowling ball? I have, nearly impossible unless it's china-made,now combining some useful items and skills that slow/poison your enemies while making you unkillable and giving your team a massive advantage is every players dream.
I know what you are probably thinking at this point "this is stuped!, I WUNTS ALL DA KILLZ!"
and I understand you, but you must remember that this is a team game, and a fed ally is as good as an starving 0/15 enemy adc.
Once you try going down the path of the tank, you will learn to make the right calls to whatever enemy top you might be facing, making you practically an unstoppable force of nature in the rift.

EARLY LANE PHASE: Farm and harass like the regular trash teemo player you are, abusing your early ranged advantage during this phase you have to be extra-careful you don't wanna become first blood during your squishy phase.
During this time, the enemy champion has been trying to farm and get the right damage items to hopefully 1-shot you with a skill shot since your blind wont let him auto-attack, little does he know that no matter how much damage items he gets, you will be 0 deaths throughout this game (Results may vary).

MID GAME PHAZE: you are hopefully farmed and stacking your tank items by now, tanking tower and being surprisingly useful during team fights being able to go head first into danger with your sprint and tankiness, being able to cast righteous punishment with your ult.

LATE GAME: umm you should've won by now...wtf?

Now that you've gone through this guide, you are ready to get some serious Kills/Assists in the rift if you don't then don't go on blaming me or this solid helpful quide due to your lack of skill anyhow go on out there and make teemo proud! :]

Thanks for Reading!