Got that in a Dynamic Q game. Which you must have at least 16 champions in order to play. When I pointed this out, I got told "STFU Noob". Another guy was like "REKT". Why do people even say stupid things like that, are they that hard for specific champions?
Its called one trick pony
They prob are only comfortable with that champ
At which point I would just dodge, walk to fridge, get refreshment of choice, do a quick online check for something funny, and then start another game.
It's fine if someone really wants to play a champ, but being a jerk about it is a good way for you to have yo wait another 5+ minutes in que trying to get it.
In my sister's ever true words "people are dumb"
Idk my favorite midlaners often get banned out 
