ROBBIE WILLIAMS got his manhood out while performing Rock DJ in front of 80,000 fans at a Take That gig on Saturday night.
The Let Me Entertain You singer was in the middle of a crotch-grab at the concert in Croke Park, Dublin when out popped his middle leg.
"He didn't seem in a hurry to put it away," a witness told The Sun.
"He was definitely up for it. He was going mental, shouting and swearing, trying to get the crowd going before shoving his hands down his keks.
"Even though he was like a man possessed, the ladies didn't complain."
Williams later said the Croke Park show was "life defining".
"Oh my Lord, Ireland, what did you do to me on Sunday night?" he added.
Williams has form for flashing on stage. Last week he begged camera operators to zoom in close when his trousers split during a gig in Cardiff and, back in 1999, he appeared naked at a show in Atlanta, Georgia.