Off meta is "trolling"

Today I hopped into a team builder as teemo mid, with a bard adc, blitz support, alistar top, and hecarim jg. We started to win surprisingly even though we had a way off meta and weird team composition. About halfway through, the enemy zilean started getting really salty calling us trolls and said we were ruining the game, since we had "Champions in the wrong spots" and were therefore trolling and winning. The jinx also told us to stop being d1cks. Eventually the game ended and I was reported for harassment by someone. Meanwhile the zilean continued to complain about how putting champions in the wrong spots was op and trolling. Why? How? What? I don't even get that zilean... Edit: I understand that off meta isn't truly trolling but it was a funny experience to witness.
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