When you are truely "comFy" with someone you AlwaYs have the feeling of contentment & support (as in a shoulder to cry on or a friend to Laugh out Loud with)..always ending the night with a relaxed & happy feeling.
"When the sun shines, we'll shine together..told you i'd be here forever.. when the world has dealt its cards we'll figure it out together...."
This can be applied to people, places and things.
When applied to a person it can mean physically or mentally "comforting" yet having the feeling of freeness to be who you really are yet having a solid unmoveable foundation.
(also a rarely known fact about "ComFy") is that each time you see the person who you are "ComFy" with it gets BETTER than the last time you did (even when you think it can't possibly get better)....
Observing a colleague's powerpoint presentation prior to its final edit...
Dude: "What do you think so far?"
Other dude: "Yeh, it's comfy man"
Or in responding to greetings...
One cat: "How you going?"
Other cat: "Yeh, comfy, man"