forgeticus 

a spell used to make the person at which it is directed forget the thing they experienced, often used after fucked up sex

Harry: I learned that little move from Ron
Hermione: What!?
Harry: Forgeticus!

forgeticus by deadheadrik August 17, 2009

forgeticus shiticus 

A spell from the Harry Potter universe which makes you forget what shitting is.

Harry: Forgeticus Shiticus!!
Ron: What the hell is happening to me!?

forgeticus shiticus by defd December 20, 2010

forgetitis

When your friend always forgets something all the time but you can't hold it against them

Friend #1: "Hey Jen did you remember that piece of paper I wrote for you?"
Friend #2: "Damn it man no the forgetitis is so real today!"
Friend #1:" Thats ok I won't hold it against you or anything..."

forgetitis by jenniferpiece May 21, 2016

forgetitude 

To forget a word that you yourself coined.
-Steven Colbert

I can't believe i forgot about truthiness, a word that I coined. There should be a word for that. Forgetitude?

forgetitude by korndog June 18, 2008