"I'm gonna play teemo mid woooo!!!!!"

Cool man you sound like a real cool guy, awesome teammate a real benefit to having you in the community really awesome man super great.

Then don't show the champ you'd like to play. You don't have to.

I had an asshole like you in my placement matches. People like you start getting the team to argue with you, and then themselves, and possibly losing the game. Don't be that asshole.

I had a game where I wanted to go Teemo top, when some dickhead like you banned Teemo. I just took top because I can do the role, my duo queue partner wanted mid and jungle, so I queued as mid top instead of jungle, just for him. So, I didn't have any other top laners that I could play well. I had to lane swap with mid, causing mid to argue with me and the person who banned, everyone else was arguing with the troll who banned my champion, and eventually everyone blamed me because of how I complained about the bans.

Thankfully, I was able to stomp mid and show them that I'm fine and there is hope; we won that game but it could have easily been a very ugly loss.

Only spoiled jerks ban their own teammates champion.