My partner and her husband (my metamour) have a tradition that every 5th wedding anniversary they get the “next size up” of champagne bottle.
This meant that on yesterday, when we celebrated their 15th, we needed to get through a Methuselah: a massive 6 litre bottle equivalent to nine standard bottles of champagne (rightmost in the attached picture).
It’s times like these you’re glad of friends you can call on to help you drink such a monster!