SUU-PPORT
This has bothered me for so long. That and randomly asking "How old are you?" Or calling them 11 year olds, 9 year olds, 12 year olds, etc. TBH I've met 11 year olds more mature than some people on these forums, that argument doesn't work well. And even worse is that some of the people on these forums are 11 years old.
And hey, what if you say something like that, and you're opponent turns out to be 11? Yeah maybe you have proven that you're probably the smarter person in the argument, but now you're being a jerk to some little kid.