The abridged version of "fucking ridiculous". When "fucking ridiculous" is either too long to type cause it won't fit, no time for all those characters, profanity is not allowed, etc..
This traffic is fridiculous!!!
Mary, while driving, texted Paul "This traffic is fridiculous!" instead of "This traffic is fucking ridiculous!", effectively reducing her negligent driving time(texting while driving) to a minimum.
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.