I came across an image today that I've seen before and mentioned in some of my seminars, so I thought I'd post it here before I lost track of it yet again. It's one of the illustrations from the margins of the Luttrell Psalter (England, 14th c).
British Library Add MS 42130 ("The Luttrell Psalter"), f.157v
Now it could be that the beverage being poured into the funnel is water and the gentleman in blue was very thirsty, but I think it's much more likely that people haven't changed all that much in the past 800 years, and what we're looking at is a couple of bros at a frat party with their beer bong.
On a side note, I particularly like the detail of the beer splashing into the drinker's eyes.