A combination of the words "family" and "damn," placed in such a way so that friends and acquaintances who have heard you refer to yours can mistakenly mix the syllables and call them your "damn family".
"So my fandamily is coming in for the holidays. Aunt Ruth probably hasn't shaved her beard in a while."
People you choose to consider family because your own family hates you. "You fucked over all your family and now you only have famdamly to count on.".... usually because you are a fucking loser that stole from and cheated your biological family.
Your parents and siblings don't want nothing to do with you anymore, try calling your famdamly for help.
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.