If I was wanting to promote my product to discerning readers and drinkers I wouldn’t want the word wanker in the winning entry.
In general PR dogma terms, this point might be well true. However, as champagne drinkers by their nature are not shy reticent people, and adults to boot, swearing is entirely permissible. Indeed, one way to limit alcohol advertising from exposure to minors is to encourage profanity in its advertising. The wittier, the better.
And now, here's a bit of Fry (HT Spare Room):
And here's a bit of Laurie: