Zach Galifianakis Interviews Sean Penn Between Two Ferns (VIDEO)

We look forward to new "Between Two Ferns" videos the way kids look forward to the last day of school, and that's no exaggeration. When Zach Galifianakis gets a celebrity to sit between two plants, magical things happen. And by magical, we mean hilarious.

In this edition, Zach's southern "brother" Seth Galifianakis fills in and interviews none other than Sean Penn! In true "Two Ferns" fashion, the questions become more and more ridiculous until the celebrity guest starts saying things along the lines of, "I'll knock you the f**k out of your chair."