A phrase first coined in MTV show Geordie Shore, a Buckin Bungalow is a spare room which is separate from the main building, where people go to engage in frivolous sexual activities.
Gaz: Just got out of the hot tub, now i'm gonna take her to the buckin bungalow.
James: everyone's in their bed, better go to the buckin bungalow.
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.