written as: 冰淇淋 (Bīngqílín)
This phrase was popularised among internet users, when John Cena, a professional wrestler,and actor spoke chinese to promote his upcoming movie amongst chinese people.
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.