Against friends, a ragequit means I did something wrong. Those should always be fun.
Online, usually someone who is bad enough to ragequit is also so bad that they weren't a challenge. That's not fun, unless they were so bad that I was able to start screwing around and keep winning (helicopter roadkill!)
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This isn't 1950. Girls develop way later than they used to because human lifespans have increased - Lavos_Fanboy