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A person who is famous on the internet because they post stupid stuff and people laugh at them or get mad.
My cousin is an e-celeb because he streams himself playing video games and yells at the screen like it's his ex.
That girl got famous for dancing in her pajamas and saying 'I hate Mondays' every single day.
He became an e-celeb after he live-tweeted his entire divorce and called his ex 'a hot mess' 17 times.