Not only is Rethink Beer the world's first herbal charged lager, it is the world's first beverage of any kind to contain extracts of tribulus (unless you count a racehorce's pee, which, rumor had it, can taste quite salty).

Note to marketing, bringing up the taste of horse urine while talking about your beer seems like a really bad idea.

On the other hand, tribulus appears to be quite a popular ingredient for 'natural male enhancement', so maybe the Misses wont be complaining if you down a six pack or two.