A new report in the NY Post claims hard partying JFK relative Rep. PATRICK KENNEDY had slammed so many vodka shots, the bartender cut him off!

Reportedly, the Rhode Island Dem had entered the Capitol Lounge last night a few hours after giving a speech where he discussed his longtime substance abuse problem and then knocked back six straight shots of vodka.

The barkeep then refused to serve him number seven, the Roll Call’s Heard on the Hill blog, stated. 

At one point, the slap happy Pat, who is not seeking reelection, declared Barack Obama "the best president EVER!"

When reminded of uncle JFK, the site reported a giddy Kennedy slapped the back of the Camelot fan and replied "OH yeah – good one!"

Kennedy has struggled with bi-polar depression, alcoholism and drug addiction since his teens.

Must be in the genes.