Bullarcky is a word of more intensity as it gets right to the root of the actual definition.
"Your poor excuse for not calling me back last night is a bunch of malarcky!"
vs.
"Your poor excuse for not calling me back last night when my friend saw you at the club is a bunch of bullarcky!"
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.