As reported on Gigwise, Cher was forced to leave the stage after one person attending her late-afternoon slot launched a glass missile towards her on the stage.
Taking to Twitter to defend his fellow pop star, Professor Green spoke sense saying: "someone needs to have a word with themselves... how f*cking disgusting can people be? chin up @cherlloyd xx "
"It's easier to walk away from a stage if you don't like an artist than it is to fill a bottle with piss and launch it, surely?"
Remembering his own on-stage nightmares, Green continued: "I got hit with a pound coin once. I suspect it cost the person who threw it more than it did me..."
90,000 fans have packed into the two sites at Stafford and Chelmsford this weekend to see the likes of The Killers, The Stone Roses and Noel Gallagher.
However, the festival has been beset with problems with one man being beaten to death near the Chelmsford event and another man being found dead in his tent in Staffordshire.
Cher Lloyd bottled at V Festival: before it all went wrong