A person who occasionally pisses you off, but at the end of the day you still love them. They're usually your best friend who makes fun of you from time to time. Dingus can be used as a comment when they irritate you, or in a few cases, it can be endearing.
Dan: *mocking tone* "I'm Jenn...hmph hmph hmph!"
Jenn: *scowling*"You're such a dingus"
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.