A word from Indonesian Language. It is from a word "halusinasi" which means hallucinations. But in the context here, the word "halu" means 'being delusional'. It is used when the conversation opponent is doubting the statement that the other person is saying.
A : Holounggas bukan makanan (holobird is not a food)
B : HALU! (you're being delusinal/ doubt)
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.