Worst things you did when you were a noob
Misclicking in the shop and not knowing there was an undo button so i sold my item
Misclicking in the shop and not knowing there was an undo button so i sold my item
I treated the 2.5 Attack speed cap as a personal goal every game.
taking smite because it did more damage than ignite without realizing i could only use it on minions and monsters. arguably not a problem anymore
"What do you mean 'buy components'? Wait, you mean I DON'T have to buy the infinity edge straight up?! I can...Buy smaller items that build INTO the Infinity edge?! :o"
buying tier 1 and tier 2 runes
seriously, rework the rune system ffs
I lost to bots. Multiple times. I can even remember surrendering once.
I have a few actually
1.)Running Nocturne bottom, didn't realize there was an importance to running a team comp. Me and my friend thought it was normal to run Nocturne/Kassadin or Nocturne/Vlad bottom.
2.) Building 4 vampiric scepters because I thought it was a good idea
3.)Arguing with a teammate about how Jungle is not an actual position, just a place to go
4.) Building pure AD on Ryze
Sustain Veigar, nuff said
in my first game ever, I played Draven top and maxed E because i thought it was his only damage ability.
every time i would leash for a jungler i would take the small jungle minions or whatever and they would flip their shit and i didn't know what i did xD, then i always used to build stupid things on a mage like
or
on fiddle mid because they looked cool and i thought the health from warmogs was op until my friend face palmed and taught me the correct way to build
I would gap close and then immediately flash out because I thought the damage was worth the cool-down.
Have me and my 4 friends die in a level one tower dive cause we all thought we could smite that
bot.
Try to smite enemy champions.
Oh what a time to be alive season 5.
Relic shield on Yi, I thought the passive was pretty cool.
Building Bloodthirster Thornmail and Sightstone on Fizz...

when i thought that items were weapon upgrades and i bought infinity edge on master yi which in hindsight was actually pretty ok but then i thought that if i bought runaans on yi i would have a ranged attack
played teemo
ADC Zyra. That is all.
Back in season 3, I was playing a game with my friends and they were like "You're support so you need to buy philo stone and a bunch of wards".......so I bought a philo stone and 25 wards.
Got blue trinket
Buying 5 health pots and 5 mana pots every single recall
Misclicking in the shop and not knowing there was an undo button so i sold my item
o.o I still didn't know that was a thing, thanks for un-noobing me
Stated this game with playing
with smite on the top lane. I was confused over all to what was ad and ap. So I just would stack
, even though I would just spam the q button. and I stole two pentas without knowing what I did.
I didnt
buy
wards
I played Urgot.
I sold my soul (or 1350 IP) to Satan... 
when I first started I only played 3v3 and went bot lane attack speed alistar LOL. also first 3 champs I got were yorick,urgot and soraka after being told they were the best champs in the game
hehehh when i was a noob? I bought nunu and then played AD Nunu at top lane. Then i sold all my Ruby crystals for flipping Long Swords, It worked against the intro bots, so that rubbed me the wrong idea.
I then went to play some beginner bots, I regretted that, i was feeding CRAZY. The thing was that i thought AP was useless.
Multiple
boots
in a build...

playing teemo. i cri every tiem 
I used to always build
first on ADCs....
I actually was reasonably sound in mind when I was a noob. I read a shitload before I started and got a good grasp on how things worked. Had time to kill when it was DLing/updating
Didnt help me play better of course, but still..
Back in my day... There weren't any undo buttons and you played with that doran ring on ashe and you liked it!
Only getting buffs at level 6
Accepted an invitation to a game, after playing an Introductory game. I didn't realize it would be PvP. I was pretty useless, and food to the enemy.
I would regularly spam my abilities as Janna to pressure and push lanes. It was regular for me for a long time to recall simply for mana once per game until I finished my rushed mana item, the Archangel's Staff.
Starting with a mana pot on adc instead of health one. I mean, not THAT bad, but my ranked friends still laughed at me :P
Building 3 boots because I wanted to be a race car
Not using the build paths. Just waited to have the gold to buy it straight up. Ex IE= BF sword + Pickaxe + crit cloak never bought those three components
i used to not even build items lol. I thought it was just more efficient to get 6 bf swords
My build with
=

Duo mid
Not wanting a jungler because "it isn't a real position"
Attacking the enemy under tower because I didn't know how aggro worked
Buying 5 Needlessly Large Rods and Mobility Boots on every champion
i used to play orianna adc, because i thought her passive was made for it. I did suprisingly well though.
well i have a few but 2 of them r not mine but i'll tell ya since the guy dat did those left lol: 1)building all the cooldown reduction items on kartus and then realizing there is a cap 2)soloing baron at lvl6 3)building rod of ages on yasuo 4)there was a time when some1 (a troll) made me believe that teemo is an item and i kept searching for it but i couldn't find it later i found out that teemo was just a made up word 5)honoring some1 instead of reporting him