Sticky Outside of Liqueur Bottle

No, no sticks. Despite your username, I’m going to ask, “Why?”

What’s brown and sticky?

A stick

We=who? I mean, are there kids in the household sneaking it? Who has access?

I’ve shifted to the theory of drops that found their way into the neck of the bottle sneakily migrating downwards, like something out of The Blob.

There’s a bottle of salad dressing in our fridge that’s behaving in a similar way.