The worst possible answer to give when someone asks what you've been up to. You think you sound cool, but really, you just sound like an unoriginal moron.
Buzzword (technically phrase) frequently used to describe the 'culture' of a company, particularly startups or larger corps trying to project a cool image. In serious usage it's intended to imply that while there's a lot to do it's never thankless and that employees enjoy the experience overall; in practice, it generally means you're going to be working a lot of late nights without overtime for fear you won't be seen as a 'team player'; if you're lucky, this is recompensed by an open bar at the company holiday party.
You're probably not lucky, if you've taken a job where this was supposed to be one of the selling points.
"This is a really vibrant, growing organization. People love it here. We work hard and play hard." -- an interviewer you should not trust with your life or your livelihood. Run.
all work and no play makes jack a dull all work and no play makes jack a dull all work and no play makes jack a dull all work and no play makes jack a dull all work and no play makes jack a dull all work and no play makes jack a dull all work and no play makes jack a dull all work and no play makes jack a dull all work and no play makes jack a dull all work and no play makes jack a dull all work and no play makes jack a dull all work and no play makes jack a dull boy
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.