What is I Know I'm Forgetting Something?
1.
A gut feeling you get when you're about to leave to go somewhere. You know you're forgetting something essential to your trip/destination but can't immediately place your finger on it.
The feeling is strange and based mostly on intuition, similar to
This notion made an appearance in the 1990 family movie,
Joe: "You ready for this trip to Amsterdam?"
Brett: "Hell yes, the only problem is that I know I'm forgetting something, but I can't think of what it is."
Joe: "Oh, don't worry about it... you probably just forgot to feed the dog."
(3 hours later, when checking in at the airport)
Brett: "Shit! I forgot my passport!"
See