'Fanfuckintastic' White Line on Grass Print

Is this bombastic exclamation, painted in white linesman chalk, displayed on a small corner of Centre Court at Wimbledon, just behind the Kop end Goalposts at Anfield or merely sprayed on a patch of artificial grass of my neighbours front garden? Either way, don’t tell them it was me, and feel free to make up any old bullshit of your choice, to all who purvey it, once on the wall of your lovely home.