icky stuff that accumulates under a girl's boobs. usually more "kukurikapu" is accumulated by girls with big sagging boobs & by girls who put too much powder under their boobs.
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.