(verb)
the ability to forget information that you have read once it is deemed \:
a. inappropriate
b. vulgar
c. profane
or d. retarded

being able to un- read something automatically makes it alright to read anything. If it's not okay for you to read it- you can always un- read it!

When you text someone and instead of reading it they ignore it although they are active or inactive on instagram or other social media apps.