Ratalouis is a lovely fat rat from the darkest depths of Paris. He is a hopeless romantic towards Eleanor, an elegant lady rat, hopeless meaning there is no hope that she will notice him. Ratalouis stalks Eleanor through the night, unaware of how creepy this is, for he only has one braincell. It is said that Ratalouis has cheated on Eleanor with a piece of feta and Casey Aonso, in that order specifically.
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.