Save this article to read it later.

Find this story in your accountsSaved for Latersection.

If you have a dumb comedy idea, give it to Jon Hamm.

That dude is game, every time.

On Wednesday nightsThe Tonight Show Starring Jimmy Fallon,Hamm joined Fallon on a deeply odd bit.

They dressed like Jim Carrey that one time at the MTV Movie Awards.

(Remember that?)

But their songs are sort of vocal jazz.

Tags: