E-fapper
A person who talks too much about how awesome they are online. They brag like they're the king of the internet and make everyone else look stupid.
'I got a 100% on this test, you got a 50%'
'You don't know what a meme is, you're literally from the Stone Age'
'I got 10 likes on this post, you got 2, that's basically a disgrace'