You just imagine some little shit say these words to you in precisely the way that makes your fists itch to make a dent in their face.
That said, if your antagonist evokes the “little shit” vibes without you consciously thinking that, it’s probably only fair that you evoke “boomer” vibes for them. Well.
(It’s also apparent that “boomer” has evolved to mean any old fart.)
It's amusing that the phrase "Don't trust anyone over 30" gained popularity when the Baby Boomers were under 30 but now the sentiment is focused against them (and Gen-X and Millennials).