good riddance to bad rubbished

(/ˌɡʊd ˈɹɪd(ə)ns tə ˌbæd ˈɹʌbɪʃd/)

adj.

Showing effects of alcohol.

In the corner booth, Kassian sat, looking contemplative but undeniably good riddance to bad rubbished as they pondered the meaning of life with a slice of pizza.

Source: Wiktionary