1. A person too young to be a baby boomer and older than the person using the word, typically used if the target is being annoying or talking shit about a younger generation or yourself. Can be used among friends.

2. Someone born in the echo baby boom generation
"ok e boomer"
"Our teacher is an e boomer"
by OpSurly November 11, 2019
A Boomer on the path of having an OnlyFans account.
"Did you hear Rand and Nance have started an Only Fans?"
"Golly, sounds like they're E-Boomers!"
by Bambinib October 20, 2020
A Boomer who has an OnlyFans account.
"Did you hear Rand and Nance started and OnlyFans?"
"Golly, sounds like they're E-Boomers, now!"
by Bambinib October 20, 2020