A person who is somewhat Asian and they slay anyone and everyone. They are very smooth and graceful. Slaysians tend to be very attractive and socially accepted.
A sleepy Asian. They don't do homework during the day, so they stay up late doing homework and play video games into the wee hours of the night. Therefore, the next morning, or day altogether, they are very sleepy, falling asleep during assemblies, before important meetings, during important meetings, after important meetings, while thinking about important meetings, or in any dark quiet corner. (Can be spelled 'slasian', 'slaysian', and can be shortened to 'SLAY' or 'SLAIIIYY' depending on accent, severity of sleepiness, and differences in delivery.)
Teacher: God dammit Satto, did you fall asleep in the student center again - is that why you're late to class???!!
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.