This, but for Red Bull.
my theory:
if you are drinking monster red bull, then you must be needing to replenish a serious draw on your energy reserves
so you must have been having it large
so you must be recently back from doing something cool, like a marathon, or a rave, or base jumping, or landing that Hong Kong property deal
that is the 'image' of the branding and the message, the modern equivalent of fag advertising
whereas, in reality as I drive past the bus stop and see somebody drinking it, I just think 'chav'