A Porchdick is a guy who sits on a porch and is a dick to everyone that walks by. They are usually old, drunk, high, etc. Also they prefer to remain on a rocking chair or other type of chair with a big glass of scotch instead of confronting people face to face.
"Hey dude, did you see that old guy on the porch back there?"
"Yeah man, that guy is a great example of a porchdick. He called some six year old a pussy ass bitch yesterday!"
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.