Memenesia 

when a meme is no longer "cool" and you have to force yourself to never mention it ever again, so as to avoid being mistaken for a meme-layman. you repress its existance from your mind and live on in blissful ignorance, until another frog on a unicycle or some shit arrives and fills the deep void where your parents love should be.

low level meme folk: O SHIT WADDUP
triple lazer meme master: excuse me? im not sure exactly what you are referring to, its just a frog on a unicycle
-excerpt from "Memenesia and me, how i fought my forgetting"

Memenesia by TheMightySeanHub May 27, 2016

Memenials

Millenials that are obsessed with memes

When you try to send your daughter on Dr. Phil to try to fix her but she ends up becoming an internet sensation #memenials #howbahdah

Memenials by haileyjaye January 25, 2017

Melanesia 

An island territory in the pacific that stretches from Fiji to West Papua.

Inhabited by warlike head hunting dark skin people who are considered superior then the soft gangsta wannabe polynesians.

European Explorer: oh my goodness, you chopped a jolly good fellows head off. Now i got blood all over me bloody english muffin and cup of tea.

Chief Kuloolai: Welcome to Melanesia motherfucker. What you thought this was?? Polynesia?? get the fuck outta here!

Melanesia by Alphonse Dau November 17, 2009

Memenese

A new language where people only communicate through memes.

Bobby stopped communicating in English. Now he only speaks Memenese.

Memenese by paidtobenice2012 December 30, 2011

momnesia 

The amnesia that women begin to experience when they become moms.
Sometimes there's early onset already during pregnancy.

OMG, she left her infant in the car. She's got momnesia.

momnesia by Dr. No, Ph.d. May 11, 2009

Mensnesia

The amnesia which women get while menstruating. The cycle causes forgetfulness and erratic behavior. Women can lose 25% of their IQ points during this time; making rational decision making an impossible task. Some have compared the experience to a mild form of Alzheimer’s. Don’t let this temporary slowness fool you, she will knock you out!

1. The woman couldn’t recall if she left her keys in the car or if the car was running, due to her mensnesia.

2. “Hey, I have mensenia, I can’t be expected to remember you have a food allergy!”

Mensnesia by TemptressTease December 11, 2021

Mamnesia 

mammary + amnesia = When a guy has been single for so long he forgets what a titty feels like in the hand.

Man I haven't touched a girl in so long I think I got Mamnesia.

Mamnesia by shcniper December 11, 2019