A "blue cloud" is a dangerous area effect resulting from rapid, sustained utterances of profanity. Those in the area of effect experience either anxiety or elation depending on their idiosyncracies. Often encountered at truck stops or in the homes of desperate housewives. See also "turn the air blue".
If this therapist dislikes profanity, it won't work for us, because there'll be a blue cloud of profanity in the room.
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.
We have a Zoom meeting in a few minutes and I’ll probably go pajama casual.