Matt Kirshen seemed really, really happy to be back on Late Late Show with Craig Ferguson on Friday night. Turns out that’s merely Kirshen’s default facial expression!

Kirshen revealed that and more in his performance here. Especially the dangers in having big front teeth. And that’s all you wanted for Christmas, wasn’t it? You’re two front teeth? Kirshen probably wishes he gets to keep his front teeth each Yuletide. It could be worse, though. He could have the Plague. The Plague!

Roll the clip.