In the wise words of Drake, "You can't drink all day if you don't start in the morning."
"We're gonna make some drinks based on your esteemed carer," the "Late Night" host said to Kelly, who seemed apprehensive yet willing to let Seth play bartender.
The first cocktail of the day was an ode to Simon Cowell, who played a huge role in Kelly's success as the first ever winner of "American Idol." Let's just say it was packed with hot sauce and bitters. Yum!
As the drinks kept flowing, the giggles did, too. Then Kelly got behind the bar.
After Kelly made Seth The Blake Shelton -- which included a hefty serving Southern Comfort and some B-A-N-A-N-A-S in honor of Gewn Stefani -- the comedian took what seemed like his millionth shot and serenaded the singer with her 2004 hit, "Since U Been Gone."
This hilarity below is worth every minute of your time.