Is your e-dick simply lying about the size of your penis online, or is there more to it?
e-peen or e-dick as its usually called is just a word basically summarized by the colloquialism "dick measuring contest"
Basically its just trying to be a tryhard/badass on the internet. Being arrogant or disdainful of others (on the internet).
"Youre just showing off your e-peen"
"He only talks about x because it makes his e-peen hard"