According to the brewer, BrewDog Beer:
"With this beer we want to take the wheels off the royal wedding bandwagon being jumped on by dozens of breweries; The Royal Virility Performance is the perfect antidote to all the hype. A beer should be brewed with a purpose, not just because some toffs are getting married, so we created something at our brewery that will undermine those special edition beers and other assorted seaside tat, whilst at the same time actually give the happy couple something extra on their big day."
Could be worse. In Henry VIII's day, the King had to make due with sweet potato pie.
* Look it up