Hank Williams Jr gave Waylon that nickname and it means "Old Number One" in Japanese.
He gave it to him after the recorded "The Conversation" because it was Waylon's way of telling Hank it was okay to sing his daddy's songs. It was at the same time that Waylon took him out on the road with him because Hank Jr was at a low point.
Waylon:
Well, if he was here right now Bocephus
Would he think that we were right?
Do you think he might?
Hank:
Don't you know he would Watasha
Be right here by our side
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.