Justin Timberlake Talks Gambling, President Obama, & 'Runner Runner' on 'Leno'

Although he was feeling under the weather, Justin Timberlake still pulled through and made an appearance on “The Tonight Show with Jay Leno” on Monday.

While he didn’t perform, a drugged-up JT, who was on antibiotics, recalled the time he got food poisoning the night before a big performance, gambling in Las Vegas, reuniting with *NSYNC at the VMAs, and performing for the First Family at the White House.

“He’s the coolest guy I’ve ever met,” he said of President Obama.

Timberlake plays a Princeton math wiz alongside Ben Affleck in Runner Runner, which is based around the world of online gambling.

Before the film hits theaters on Oct. 4, he will release his album The 20/20 Experience – 2 of 2 on Sept. 30.