Assillation 

The unnaturally pronounced oscillation of the ass during motion such as walking/running. Can be seen in models strutting down the runway, toned high level athletes, etc. Similar to the way a cheetah's shoulder blades oscillate when stalking.

Damn, that girl's got some assillation going on. Look at that booty go!

or

Those speedskating suits don't leave much to the imagination! You can even see the assillation!

Assillation by c.is.for.celeritas November 1, 2010

Assolation

Assolation: the social isolation that results when you’re such an annoying asshole that no one wants to be with you.

Ever since Uncle Bob manologued at Thanksgiving, he’s been in assolation.

Assolation by LooneyTooney January 7, 2019

Reverse Assimilation 

The act of an individual, group or nation assimilating to the culture of immigrant populations rather than the immigrant populations assimilating to the culture of the host nation.

Guy 1. "When Abdul and his family moved into the street we thought they may like to join in and be a part of our community. Instead some of our liberal neighbors converted to Islam and now demonize what is left of our community."

Guy 2. "Yeah well, that's reverse assimilation for you.."

Reverse Assimilation by TradWaman March 6, 2019

assimilation 

Absorption of a minority group within a larger population; distinct from integration in that it implies a loss of cultural identity and ultimately of individuality. Usually relates to the pressure on immigrants to conform to the expectations of the mass culture in their new country. More recently applied to the aggressive subjugation of races by the Borg, and hence to a person joining a large faceless group of stupid people.

"Bad news; she bought the Avril album. Her assimilation is complete."

assimilation by shoggoth August 11, 2003

assholation 

A retreat or quarantine for the president or members of the executive branch other than Camp David.

Kellyanne Conway and Steven Miller have been placed in forced assholation.

assholation by Pine Bluff April 15, 2020

assignation 

A secret meeting usually occurring between lovers.

As he prepared for the coming assignation with his sister-in-law his naked hairless chest began to throb and his face erupted into a cold sweat.

assignation by witit November 22, 2013

assimilation by the Borg 

The habit of wearing a Bluetooth cell phone on one's ear at all times. Usually in reference to high-powered executive types, the first to develop this habit in earnest.

Have you seen the new director of security? Yeah, he's been assimilated..... (Note that any form of "assimilation by the Borg" can be used.)

assimilation by the Borg by eeeeeee July 13, 2006