[{quoted}](name=Deep Terror Nami,realm=NA,application-id=ZGEFLEUQ,discussion-id=2ufuGn9g,comment-id=0000,timestamp=2017-02-11T16:47:28.514+0000)
The short answer is "Yes, you need to be going bot lane to support", but it's a bit complicated as to why.
The meta which almost every other player follows puts two players in the bot lane. When you decide to play counter to what the rest of the team wants and expects it tends to have a pretty negative impact on your team's ability to work together. While playing outside the meta is itself not punishable, when you're playing against your own team it's a problem.
If you want to play something that conflicts with the vast majority of other player's expectations I recommend getting their permission before doing it, or just playing with a premade that's ok with it.
Here is a case of a player that was banned for consistently playing against his team by essentially playing a second jungler instead of supporting bot lane; http://boards.na.leagueoflegends.com/en/c/player-behavior-moderation/79aGu3wR-support-singed-isnt-banable-but-thats-not-the-point?comment=006b
So here is the thing, I don't do it often. Like I said it's only when I get an ADC who is clearly trolling. In those situations, when I know bot lane is already gonna be a loss. I go to another lane and support there. The question I'm asking is, is there any rule that says support has to go bot? I know you have to play your role and roles are defined as where you get your farm. So as long as I'm not stealing farm from other players I should be able to go where I want. I know going against the meta is not against the rules, which is what I would call this. Also most of the time my team is cool with me doing this. It's just the ADC tryn that's upset I'm not bot with him.