When you are chatting with someone and can't remember a certain phrase or name. It is on the tip of your tongue but for some reason you just can't get it out of your mind. You then waste hours and hours trying to think of it, asking everyone you know. Then days later you yell out the answer and look around for approval, only to find you're by yourself.
Susan: What's the name of that British actor?
Kristen: Oh, the one in Bridget Jones Diary?
Susan: Yeah, shit I can't think of his name.
Kristen: COLIN FIRTH!
Susan: The Jude Law Effect Strikes again.