To be the type of person who sleeps on other people's couches meaning you sleep with your feet out because the blankets too short or the couch is too short.
You be sleeping with the guy downstairs on the couch with his feet out.
Having the fear of sticking your feet out of the end of the bed, for the irrational fear that someone may come and cut them off in the night without you knowing and without the protection of your bedsheets.
"I need to get a duvet long enough to cover my feet. I have feetoutofbedaphobia"
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.