Jug O Wine Edit Meaning

1.

N. A humorous moniker for a large wine container, typically glass, that is at or over 4 liters in size. Most appropriate in usage when the wine contained within is an inexpensive brand.

Dude, you bought the jug o wine!

(the inference being, a much larger sized wine container was acquired by the target of the remark - as opposed to a more standard 750 ml wine bottle size)