Blake Shelton makes Jimmy Fallon crack up over milking a cow

Jimmy Fallon made Blake Shelton try sushi back in May. Now the country music star is getting some payback.

On Monday's Tonight Show, Shelton got to teach Fallon how to milk a cow, and it went about as well as you might think.

Fallon showed up dressed in denim overalls and a cowboy hat. Shelton critiqued the "disrespectful" look, telling Fallon he looked like Howdy Doody and Woody from Toy Story.

"You think this is a game? You think this a game? This is serious," Shelton scolds Fallon, but neither could keep it together for long without chuckling.

The Voice coach tried to teach Fallon his milking technique, saying, "This is all about romance and finesse. Have a connection with Oreo."

Fallon struggled to keep a straight face, making his technique suffer as Shelton offered support. "It's more a squeeze-push than it is a stroke," he said.

But it's not long before Shelton took over to show Fallon how it's done.

Watch the hilarious video below.