Literally just an acronym meaning "I feel so alone and empty, help me." Usually said with excitement to add irony to the meaning. A great way of saying how you feel internally without anyone worrying.
Dude who is clearlydrunk, high, turning up or all 3: IFSAEHM MUTHAFUCKAS
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.