One Size Fits All

This is a joke that one of my friends told me:



Green-me asking you
red- you asking me or telling me an awnser

Would you remember me in an hour? yes or no
A minute? yes or no
What about a second? yes or no

If you awnsered yes to all of those questions, here is the 2nd part to the joke:

Knock, Knock
Who`s there?
You already forgot me?!