A big, green ominous-looking poster has cropped up on Brick Lane, Shoreditch.
But this isn't just any poster. This is a billboard, sat (rather aptly) outside of hipster hotspot, the Truman Brewery.
And guess what? It spouts beer from a pump enabling passers-by to pull themselves a free pint.
As part of its If Carlsberg Did campaign, the supplier of beer and lager has released a self-service billboard allowing punters to grab a taste of the brand's beer while on-the-go.
Despite the stunt being very overindulgent (we can't imagine how much beer they'd need to pump through the poster in order to refresh Shoreditch's inhabitants - let alone London's), it's also sure to get people talking - and swigging, for that matter.
And with the sudden influx of good weather, their timing couldn't have been better.
Cold beer, anyone?