What is going on with these dumb athletes? First Giants wide receiver Plaxico Burress shoots himself in the thigh inside a crowded nightclub and now ex-Falcons player Jamal Anderson is busted in a Peachtree (Atlanta) tavern bathroom stall snorting cocaine off a toilet???

Now watch his few endorsements dry up faster than Chris Brown’s ashy lips. He will find out quickly that he is no Michael Phelps when it comes to getting a pass for stupidity.

TMZ has learned former Atlanta Falcons running back Jamal Anderson was busted inside a bathroom stall — with another — at the Peachtree Tavern after a patron heard someone making a “snorting noise.”

The patron reported the “noise” to a bar security guard — who happened to be an off-duty Atlanta Police Officer.

The Atlanta PD tells TMZ the security guard went into the bathroom to investigate when he heard the suspicious noise. We’re told the guard then popped over the top of the stall and claims to have seen Anderson and another man doing lines of coke off the toilet tank. He immediately arrested both men. [LINK]