What you do as teemo, is get tier 2 boots asap. Grab the 4 in MS (Utility)
and Ms quints.
Start boots + 3
Grab W at 4. Shroom up the bushes.
get some mana regen, as you will likely be popping ur W pretty often.
Wit's end would work well. (Mr + attack speed.)
Grabbing a Philo wouldn't be bad either, and I'd consider shurelias. just for the CDR, and active to get away from singed 9for teamfights, you're probs not gonna finish it in lane)
Extra gp10 to make up for how much he's gonna try and push the lane.
top lane is all about countering your opponent.