Oldlennial 

A person of a previous generation who does the same thing the complain about millennials doing, but are oblivious about it. Also seeking any entitlement they feel they are owed based on age. Can be applied to any generation born before 1980.

I couldn’t get down the grocery aisle because a group of Oldlennials were taking a selfie.

I got held up at the ticket line by some Oldlennials arguing about their senior discounts.

Oldlennial by GDogg25 November 26, 2018

oldenial 

Pronunciation: old-in-ee-ul

An oldenial is a person who is older than generation Y, but is in denial about their age and has similar behavior to a millennial. Famous oldenials are: Kim Kardashian, Martin Shkreli.

Bob, your lack of regard for things is proving that you're an oldenial.

oldenial by psykoz September 24, 2016