Well, he really stumped me on the lichen joke question. There's a good challenge for you: come up with lichen jokes that can be appreciated by nonlichenologists (btw, I couldn't bear to bring up the overused "I'm lichen it" or "Freddy fungus...")
The cartoons are in the "Lichen Humor" section of my website: http://bmccune.weebly.com/lichen-humor.html
It's already linked to the NWL website in the sense that my website is linked from NWL.
By the way, the link previously posted is generic, I think, so that it will go to the current show. I think the following will be a stable link:
https://soundcloud.com/thinkoutloudopb/all-about-lichen