1) Means "I don't know". Contrary to popular belief, does not mean "Keep asking me the same question and maybe an answer will pop up."
1) Her "What turns you on about bondage?"
Me "I dunno"
Her "Is it being tied down or having no control or having to place your trust in someone?"
Me "I don't know you stupid bitch! Stop asking the damn question!"
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.