When someone posts to a forum or website thinking that they are anonymous, but fail to log out or choose the anonymous option.
Did you see Wendy anonfail? She was talking shit about Kylie and didn't log out, so now everyone knows she's the hater.
by anonmouse October 8, 2009
Get the anonfail mug.A gender bent, age regressed version of 4chans anon that is pictured as a green horse with a black maine and a black question mark cutie mark on its butt. Often referenced in /mlp/ and shipped with other my little pony characters characters.
by Anontard March 5, 2024
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