Happy game, carried with Nasus, enemy laner (Yasuo) was friendly and ok with me winning...

... end of the game, their mdlaner "report Yasuo troll". ...

He shut me down SO hard, then failed ONE dive, their jungler failed another, and he made the mistake of letting me farm a couple minutes. We went from 1/2 for me and 3/0 for him to 10/4 for me and 3/11 for him. Due to me stacking up.

And that's totally him being a troll. Commuity please. Learn to recognise winners and simple mistakes and stop calling everything a troll.