enviroid

A portmanteau of "environmentalist" and "hemorrhoid," an enviroid is a self-appointed savior for the planet whose humorless criticisms of others lifestyle choices make them a pain in the ass.

Dave came up to me at the party last night and gave me a bunch of crap for driving a mile to get here instead of walking in the summer heat; then he got really salty because I drive an SUV. What an enviroid!