Idiom akin to "water under the bridge" that's also a pun on cocaine habit? [SOLVED]

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Editor (Resident Evil)
Joined: 26.10.2015
Pending moderation

Is there an English idiom/expression that can be understood both as meaning "water under the bridge" / "yesterday's news" and as a pun regarding cocaine/drugs?
In German, there is "Schnee von gestern" (lit. "yesterday's snow") with "Schnee" also being a colloquial term for cocaine.
I'm not sure if "but that's all blown away" (referencing "blow" for cocaine) would do the trick.

Background:
In a German mag, I once read an interview with Sarah Jessica Parker where she allegedly made such a pun, and I always thought since the pun only works with the German idiom, the author must've made that part up (if not the whole interview).

Senior Member ♥
Joined: 09.04.2017

As a native English speaker, I can't think of any idioms in English that reference cocaine, especially ones that mean "water under the bridge." Sorry. Sad smile

Editor (Resident Evil)
Joined: 26.10.2015

Actually that is helpful because I already suspected that part of the interview was made up. Regular smile Thanks!

Senior Member ♥
Joined: 09.04.2017

It definitely sounds made up. Glad I could help!