Charging into lane when you know you will die = feeding
For some reason it seems like you need to have died in enemy nexus at minute 7 for anyone to believe they were feeding,
but when you are 1-4 at minute 10 charging into a Katarina over and over who not only has double your farm but all 4 kills on you, after your entire team just says "play safe and hold on Vayne is getting fed too" ( i was 3-1)
His reply? "NOPE" runs in and dies 4 more times and demands we forfeit at 20.
Intentional feeding/not even trying to win ruins far more games for me than toxicity does.
Usually toxicity comes after one of those issues anyways ^ Nip this in the butt, take care of a big chunk of toxicity imo.