Today is the 40th anniversary of Earth Day, which means James Cameron unleashes the Avatar DVD to the world. It also means every smelly, overzealous neo-hippie on a college campus will obnoxiously encourage you to compost your pocket lint. Here at BroBible, we thought it would be fun to commemorate the occasion with this unusual picture of a a tree trunk getting it on. Feel free to caption it in the comments.

Personally, I'm gunning hard for "If a tree squels in the forest and no one is around, does anyone hear it?"

FYI: Our friends at COED magazine put together an entire gallery of funny pictures for your entertainment on Earth Day.