Green’s Dictionary of Slang

boomer n.6

1. (orig. US) a member of the ‘baby-boom’ generation (born in the late 1940s).

[US]Time 21 Jan. 57/2: ‘We’ the baby boomers – had the schools, the attention of the media etc.
[US]Fortune 15 Apr. 15/3: Not only must they find gainful jobs for their boomers [...] they also have fewer workers in the productive 25- to 65-year age group to carry the social costs imposed by the very young and the very old [OED].
[US]J. Lerner You Got Nothing Coming 173: Woodstock [...] was attended by all 50 million or so of my fellow baby boomers. Just ask any boomer.
[US]L. Berney Gutshot Straight [ebook] ‘You’re a front-edge boomer about to hit sixty-two’ [...] You’ve got a decent pension, some money in the house, but who knows will it be enough.

2. attrib. use of sense 1.

[US]Mad mag. Jan. 37: Bottled water has become the whiskey flask of the boomer generation.
Twitter 29 Jan. 🌐 Beetroot-faced boomer cunts saying stupid fucking shit like ‘we fought in a war’ when they were born a fucking decade after the war ended .

In compounds

boomer reover (n.)

(Aus.) the Covid virus, esp. in its initial manifestation.

Urban Dict. 15 Mar. 🌐 Coronavirus is just boomer remover.
[UK]R. Elliott Sociological Rev. 70:1 [internet] [title] The ‘Boomer remover’: Intergenerational discounting, the coronavirus and climate change.
[Aus]Betoota-isms 13: Boomer Remover / 'bum? r?'muv? / 1. The first wave of the coronavirus pandemic [...] 2. The initial spread of Covid-19 that occurred February–June of 2020, resulting in a nationwide lockdow.