<human>: Summarize the given text in a few sentences.

Back in sixth grade we had shared our email addresses with the class. This one girl particularly became annoying because she so often sent out those mass forward chain letters. I at the time didn't really know about blocking an email address or spam filtering, so one day i decided to respond telling this girl how fucking dumb she is and how fucking dumb her email forwards are. I put a good effort into really insulting her and her intelligence. 

Fast forward a few weeks to a family gathering at my aunt and uncles house. My uncle is talking about how my younger cousin has been learning how to use the computer lately, He's like, "what was with that email to [cousin]? She had just learned how to forward an email and then you wrote that horrible message back" At first i am confused, then i realise, my cousin and classmate have the same fucking name. I guess i was too angry to see the difference in email addresses. So i am like [seal face] "Oh... sorry, that was for someone else... "

My uncle said he figured so and seemed to laugh it off, but i felt so awkward the rest of the day there.
<bot>: Mistakenly sent my cousin an email of nasty hate because she had the same name as a dumb girl in my class.