A poor excuse for a dance move designed in thirty seconds, in which you wiggle your ass back and forth like there's a three foot dildo in there, and then walk forward and backward stiffly. (Imagine walking while holding a shit)
"Yo did you see Emily last night? she does the butt stuff shuffle a tad too well"
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.