Rhys Darby wasn’t just the ill-suited manager and diplomat for New Zealand’s musical duo Flight of the Conchords on HBO, he’s also a stand-up comedian himself.

Darby was in New York City last weekend, and performed Friday night on Late Show with David Letterman. Darby proved why men aren’t necessarily good lookers, and showed off his act-out and sound effect skills, as well as his hefty wallet. What’s in your wallet?

Roll the clip.