The last two times I tapped milk I thought: that’s never a whole liter, so much air left in the bottle. Just now the bottle overflowed. Couldn’t see in the pitch dark.
I thought if “to tap beer” is a term, I could use it for milk as well. Let me know what you native speakers around the world call it. Or maybe it was just not enough context.
Again. My two milk bottles overflowed. Made quite a bit of mess. :-/ Better bring a third one next time.