A DRUNKEN teenage Celtic yob was fined £500 for belting out... The Billy Boys.
David Louden, 19, sang the banned Rangers fans’ favourite twice on a train in front of shocked mums and children.
The lout, who has a Hoops ‘You’ll Never Walk Alone’ tattoo, gave a third chorus of the sectarian song after being bundled off the carriage by cops.
But Louden denied yelling the song as he went on trial at Paisley Sheriff Court — despite admitting he could remember nothing of the incident.
He said: “I’m a Celtic fan and I have been all my life. I was pretty drunk. I know deep down inside I would never sing that song.”
Two British Transport Police officers described hearing Louden, of Ardrossan, Ayrshire, sing the bigoted lyrics just yards away from them. And Sheriff David Pender found the lout guilty of breach of the peace.
Louden had earlier admitted resisting arrest during the incident between Johnstone and Paisley Gilmour Street stations in April 2011.
He spent nearly 40 days behind bars as he awaited trial.