A person who is so obsessed with the environment, such as owning a hybrid car, tree-huggers or going green, that makes them eugly.
John: We need to talk.
Stacy: What is it?
John: We gotta break up. In the last few months, you've been really obsessed into helping the environment & dragging me along to recycle & shit. I'm sick of it. Stacy, you're just eugly.