What is a mega pint of wine?

As an AI language model, I cannot find any specific information that links to a "mega pint of wine" - I believe you may have got the terminology mixed up as "pint" is a unit of measure used for beer, ale, or cider, not wine.

However, I can provide general information about wine bottles and their sizes, as they come in a wide range of measures:

• A standard wine bottle is 750ml, which is equivalent to 25.3 ounces or around 5 glasses;
• A Magnum is 1.5 liters (or 2 standard bottles) and it amounts to around 10 glasses of wine;
• A Jeroboam is equal to four standard bottles or 3 liters of wine. It typically serves around 20 to 24 glasses of wine;
• A Methuselah is 6 liters or equivalent to eight standard wine bottles. It holds about 40 to 48 glasses of wine;
• Imperial is 8 standard bottles or 6 liters of wine and holds about 50 to 60 glasses.

Remember, it is important to drink wine responsibly and in moderation.