Spacey nails Christopher Walken, Johnny Carson impressions on 'Tonight'

It turns out kids write the darndest things. For MasterClass Junior, a segment on The Tonight Show, host Jimmy Fallon and his guest act out scenes written by elementary students who are given just the title of a movie or TV show.

On Tuesday night, Kevin Spacey, who was just in D.C. for the unveiling of President Underwood's portrait, read scenes with Fallon that were written for ​House of Cards.

To judge which actor was more believable, there were three kids on hand, including one named Angus who told Spacey at one point, "I don't get you."

Out of the mouths of babes, right?

In the first scene, Spacey decided to play his part of garbage man like Christopher Walken.

For the next scene, he gave his character, Johnny, the voice of The Tonight Show host for 30 years, Mr. Johnny Carson.

Spacey's impressions were so good, even that tough critic Angus came around, and Spacey was crowned the man with the best acting chops.

'House of Cards' premiere: President Underwood's portrait now hangs at the Smithsonian