Almost As Long As I've Been a Virgin

Engineer #1: You hear about the names of these meeting rooms? They're named after subatomic particles.
Engineer #2: Ya, we've known about them for a million years.
Engineer #3: Really? A million years?
Engineer #2: I was being facetious, but if you want to be literal about it, the space was always ,there we just built offices around it. So yes, they have been there for millions of years.