Banksy's mural in East London
The Daily Mail decodes the image :
"It depicts a water tap being called - a tap phoned - with a simulated phone ringing 'Brinngg, Brinngg' as well as a confused person with a thought bubble which reads 'Oh no... my tap's been phoned.' "
'The Guardian' online hasn't reported yet, but meanwhile you can browse their previous articles on Banksy in the 'Art & Design' Section