A chidlet is a children often younger than the person saying the word and is often used when you are speaking about some annoyinglittleprick such as Blake Mackeri YOU STUPID LITTLE SHI-
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.