Will Ferrell and Zach Galifianakis play some major tonsil hockey in this just-released Funny or Die video, and it's HOT.

The two funny men enjoy a serious thespian chat about films in the Webby Award-winning series, Between Two Ferns with Zach Galifianakis, before watching uncomfortable animal videos, feed each other cherries and strawberries, and then proceeding to make out!

Check out Mad Men star Jon Hamm's random cameo -- he crashes the set to try and find his lost keys!

Find out which other funny guy Ferrell has made out with in public, after the jump ...