A m00f is a word made up by me and some other people on Neopets.com (Petpetnip didn't make it up, although he was there when it was made up... I made up "moof" and then someone else added the zeroes) and it was made as a substitute word for "n00b", which sounds too much like it meant "newbie". Basically it means an idiot, or someone who is very annoying.
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.