
🎵 "... And I'm sitting
In the kitchen sink ..." 🎶
@scy they were catchy
it was a very stylish decade
@scy I believe this addresses both constraints:

(Wait. This isn't the kitchen.)
@scy Don't worry. It happens to everyone. If it happens to you and there are witnesses, just say hello and wave goodbye.

And let's not even mention the lyrics to the Gilligan's Island theme song.
@scy There's a very interesting reason this happens that's colloquially known as the "doorway effect." Very basically, your mind discards most of your short term memory when you leave a room unless you're actively thinking about it or have some other means of reconnecting to those memories (like holding an object related to the reason you're in a new room).
https://en.wikipedia.org/wiki/Event_perception
https://www.scientificamerican.com/article/why-walking-through-doorway-makes-you-forget/