THIS is the astonishing picture which could destroy the career of the greatest competitor in Olympic history.
In our exclusive photo Michael Phelps, who won a record EIGHT gold medals for swimming at the Beijing games last summer, draws from a bong.
The glass pipes are generally used to smoke cannabis.
And after sporting chiefs announced laws which mean four-year bans for drug-taking, Phelps? dreams of adding to his overall 14 gold medal tally at the 2012 games in London could already be OVER.
It was on November 6, weeks after his Beijing triumph, that 23-year-old Phelps surprised students at the University Of South Carolina in Columbia by showing up unannounced at a house party.
He was visiting Jordan Matthews, a girl he was secretly seeing who was a student there.
Our source revealed: ?Michael came to visit Jordan but ended up just getting wasted every night.
?He arrived with a group of girls hanging all over him. Jaws hit the floor when he walked in. You don?t get many celebrities in Columbia, so when Phelps comes to your party it?s a very big deal.
?He didn?t know many people so you?d think he?d be a little shy. But he was loud, obnoxious and slamming beers from the get-go.
?Every girl wanted a piece of him and every guy wanted to be his best buddy. He couldn?t get enough of all the attention.?
As he basked in his hero status, Phelps knocked back beers and shots of spirits. And when a student offered him the glass bong engraved with red writing, he did not hesitate, says our source.
The 6ft 4ins athlete, in a white T-shirt and navy cap worn back to front, clasped the device in his huge hands and inhaled deeply.
Our source said: ?You could tell Michael had smoked before. He grabbed the bong and a lighter and knew exactly what to do.
?He looked just as natural with a bong in his hands as he does swimming in the pool. He was the gold medal winner of bong hits. Michael ended up getting a little paranoid, though, because before too long he looked like he was nervous and ran out of the place.?