Parasites similar to mites that dwell on the head. Or inside...for they have the ability to travel to the brain and subtly take over a human's consciousness.
Nonsense technobabble used in a production context.
Reticulating splines started off as an in-joke at Maxis and grew to fame with the widespread popularity of The Sims. While it does have a "real" meaning, this definition isn't actually correct in the context of its use. It's really a programming joke.
Reticulating splines is essentially filler. Don't want to describe what's holding up the program? It's reticulating splines. Why isn't the Internet working? The splines aren't reticulated. Heck, don't want to explain your calculus assignment? We're reticulating splines this week.
See also processor gremlins for the computer hardware equivalent.
Sorry the video took so long to upload. Reticulating splines took hours!
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.