A
day, usually on a weekend or during a day off, when you have nothing to do and sit around lazily in your pajamas, not leaving the
house. Often involves eating
cereal for every meal and excessive television/video games.
Speaker
1: "
Hey, want to go see a movie?"
Speaker 2: "No way man, I'm having a pajama
day. Let's just sit around and watch Seinfeld reruns."