Acceptable Banter question: Did you buy your account?

Just got out of a game where I was laning vs a M7 support who countered my pick. I was a little worried but also confused as to why they took TP and heal.

After a few minutes of playing it became clear that this was not a m7 on that champ, they played like they were a bot, so I asked who she bought her account from.

Her and the midlaner LOST THEIR MINDS. It was funny because of how tilted they became and eh i wont deny i inflamed it, but nothing personal (aside from asking if they knew what ironic meant).

So, after the game I had a moment to calm down and thought hey, i wasent very nice but that was acceptable levels of banter.

Figured i would get your thoughts.