I was in the middle of making dinner when this happened. I’m grateful I poured it into a measuring cup first. Thankfully I don’t live too far from another source.
I remember milk staying good almost a week past its expiration date when I was a kid. Boy have the times changed.
Virtually all supermarket milk in the US is homogenized, this is almost certainly curdled due to spoilage.
It doesn’t look curdled, though. The liquid doesn’t look yellowish and semi transparent enough.
And it’s possible that this batch simply missed the step. I know people who threw out glass bottled milk because they were too yuppie to know any better. Glass bottled stuff is often not homogenized, so I know what it looks like. OP didn’t mention any smell, so I’m not convinced.