When you live in Southern California, you are extremely close to the boarder. Very often you will see old scummy vehicles, trucks loaded past the brim with furniture etc., this is where the term "Mexican Mobile" comes in, you just know when seeing one of these scummy vehicles that a Mexican is in it. Spend a day here and you'll know what I mean.
Karen: Hey that smoggy vehicles just cut me off, and why is there so much trash on the road?
Me: THAT's what we call a Mexican Mobile
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.