[TeMPOraL]

Honestly, and in line with a reply upthread[0], fresh saliva may be more sanitary. I mean, it has some non-zero antimicrobial properties, plus it doesn't accumulate random stuff that could grow over time.

Yeah, I'm starting to understand why old people may be past the point of giving a damn about the optics.

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[0] https://news.ycombinator.com/item?id=42036400

[loco5niner]

Please no... at least with cash. Cash is one of the dirtiest things out there. You don't even want to think about how dollar bills get dirty.

Source: bank teller training years ago. We were supplied (always) with little moistening pads at our tills.

[doubled112]

I've seen tons cash come out of bras, socks and other crevices, and I was just working at a gas station. Let your imagination run wild!