MY THOUGHTS ABOUT BOTTLES OBJECT WORLDBUILDING
There's two types of bottles and other liquid container objects - first born empty, can be filled with anything and second, those who's liquid is a part of their body produced by it, loss of it is a health risk.
If we're taking worlds where objects have child stage which isn't true for some shows, all of second category are born with default "baby liquid" (water mixed with waste from the time they were forming and some other stuff) inside, in few weeks their body starts producing the proper liquid (juice, acid, beer, whatever) but before it the baby liquid can be tested and you can predict what the final one is going to be.
Fun fact: for objects who naturally have alcohol inside it's almost impossible to get drunk, they're pretty resistant to effects of alcohol since their body always produces it. tho there's a condition they can be born with that actually causes them to be drunk all the time. Most objects with it die as babies, but if they make it through the first year they're most likely gonna make it to adulthood. There's a similar thing with objects who have harmful chemicals inside, tho they're guaranteed to die if they aren't born resistant.
First category objects often use liquids for fashion purposes, like filling themselves with glittery water. Among rich objects who are glasses 🍸 it's common to "wear" pretty looking multilayered alcohol shots inside to show off their status. And yes, it makes them drunk.
First category objects don't have to have liquid inside but for plastic bottles it's heavily recommended as it makes them less likely to get deformed.
No matter the category, drinking out of someone is seen as something personal or intimate in majotity of object societies. Tho a lot of younger objects are chill with it and don't see it as a sacred thing and often let their friends take a sip.
There's an old marriage tradition - at their wedding the bottle object gets filled with wine. They aren't supposed to be opened as long as the object is alive (or the marriage lasts). When they die, their loved ones and relatives drink the aged wine out of them on the funeral.
